# DuoNiche Full Context An app for practicing specific languages with daily adaptive exercises, explanations, and progress tracking. ## Access Model - 7 days full access without a card: Everyone can start practicing in Telegram with 7 days of full access and no payment details. Mobile apps will keep the same no-card first step when they launch. - Additional 7-day Premium trial: If the learner later attaches a card at Premium checkout, the payment provider offers an additional 7-day trial and shows the exact renewal terms before subscription. ## Pricing - Monthly: $8.99 USD - 6 months: $34.99 USD - Yearly: $59.99 USD - First-year promotion: $44.99 USD Free plan: - Standard task types - Fixed difficulty level - Short mistake explanations - Basic progress stats - Intervals between sessions Premium: - Access to all languages with one subscription - No waiting between lessons - Listening comprehension exercises - New exercises - Detailed error explanations - Adaptive level - Weekly analytics - Unlimited translations # Languages ## Bulgarian Bulgarian practice for expats in Bulgaria: residency, housing, local services, utilities, and daily conversations. Pain points: - Paperwork, appointments, and local messages use wording that travel content usually skips. - The Cyrillic alphabet is only the first barrier; endings and word choice need regular practice. - Major language apps rarely offer Bulgarian, or they lack the depth needed for relocation. DuoNiche gives you focused practice for real-life settings. Proof points: - Practice current situations: Work on practical vocabulary for setting up utilities, local shopping, and everyday interactions, not just ordering coffee on vacation. - Understand suffix articles: If the answer is wrong, the explanation shows where the definite article went and how to build the phrase. - Get used to spoken Bulgarian: Audio tasks help you catch meaning in fast speech from officials, neighbors, and everyday conversations. CTA: Start Bulgarian in Telegram Telegram: https://t.me/DuoBG_bot ## Greek Greek practice for Cyprus and Greece: residence, citizenship exams, family life, work, and everyday reading. Pain points: - The alphabet is only the visible barrier; the bigger problem is answering normal daily Greek without overthinking every ending. - Following local news, understanding school chats, or answering a fast question at a shop requires active practice, not just a phrasebook. - Tourist phrases do not prepare you for messages, public offices, family conversations, or listening tasks. Proof points: - Prepare for exams and daily life: Train reading, answer choices, and vocabulary around topics that can actually help in an exam. - Understand Cypriot and Greek speech: Listening tasks help you handle natural fast speech, not only slow studio recordings. - Repair mistakes on the spot: Wrong answer? We show which rule to reinforce so the next attempt feels clearer. CTA: Start Greek in Telegram Telegram: https://t.me/DuoEL_bot ## Serbian Serbian practice for expats and digital nomads: housing, local services, residence permits, clinics, and daily life in Serbia. Pain points: - A dozen stock phrases are easy to learn, but they do not help much when a landlord or MUP clerk writes back. DuoNiche trains you to build your own replies. - Latin and Cyrillic, cases, and common bureaucratic wording need repeated answers, not one saved phrasebook. - Popular language apps reduce Serbian to basic tourist phrases. DuoNiche provides practice for the real daily tasks of settling in Serbia. Proof points: - Practice real-life situations: Read, listen, and build phrases for chatting with neighbors, ordering at a kafana or local cafe, or visiting a clinic. - Fix case mistakes: Missed an ending? We briefly explain why the word changes here, so you do not memorize phrases blindly. - Get used to real dialogs: A tourist phrasebook will not help much with bills and local errands. Train replies you can use outside the app. CTA: Start Serbian in Telegram Telegram: https://t.me/DuoSR_bot ## English English practice for international work: job interviews, remote team meetings, business communication, and workplace replies. Pain points: - You can consume English all day and still avoid answering in English when it matters. - In job interviews, global teams, or casual small talk, you need the active skill of forming thoughts quickly, not just passive vocabulary. - A large course is easy to postpone; one short answer is easier to do today. Proof points: - Train the active skill: Translate, listen, and build phrases yourself. Stop only watching videos with subtitles. - Prepare for small talk and work calls: Practice the sentence structures you actually need in daily standups, interviews, and professional emails. - Close specific gaps: You do not need to restart the whole course from zero. Tasks adapt to your level. CTA: Start English in Telegram Telegram: https://t.me/DuoEN_bot ## French French practice for expats: residency paperwork, prefecture appointments, CAF, housing, and daily life in France. Pain points: - Administrative French is easy to recognize and hard to answer without practice. - Dealing with residency, utilities, and daily letters requires steady writing and speaking practice. - Long rule pages do not help if you never practice the same sentence shapes again. Proof points: - Practice daily and administrative French: Work on phrases for renting, setting up utilities, and confidently handling local administration. - Understand agreement and gender: Missed a tense or ending? The explanation shows the logic, not only the correct answer. - Connect writing and listening: Written and spoken French are different challenges. Audio tasks help you stay oriented in real conversation. CTA: Start French in Telegram Telegram: https://t.me/DuoFR_bot ## German German practice for relocation: EU Blue Card, family reunion visa, work, study, and daily administrative tasks. Pain points: - Whether you are navigating local bureaucracy or chatting with colleagues, even basic German progress makes daily life significantly smoother. - Cases and word order do not stick from tables alone; they need repeated choices inside real sentences. - Official correspondence (Behördendeutsch) and work emails are hard to master through basic drills. You need practice with real communication contexts. Proof points: - Automate German word order: Put the verb at the end or choose the right article inside the app. - Practice Behördendeutsch: Train workplace phrases and bureaucratic German (Behördendeutsch) to handle landlords, HR, and local offices confidently. - Understand Dativ and Akkusativ: Mistake feedback shows why this context needs a specific case, so you stop guessing. CTA: Start German in Telegram Telegram: https://t.me/DuoDE_bot ## Italian Italian practice: residency paperwork, Comune services, family, housing, and daily life in Italy. Pain points: - Handling residency, Comune services, and housing requires active sentence building, not just memorizing words. - Endings, agreement, and word choice need repeated answers, not only saved phrases. - Conversation confidence grows from small repeated answers, not from collecting links. Proof points: - Practice Italian for local Comune services: Work on phrases for managing your home, dealing with local offices, and everyday errands. - Catch endings and agreement: Italian needs precision. Explanations connect mistakes to the article or gender you missed. - Answer instead of translating in your head: Short daily sessions help you form thoughts directly in Italian and switch off the inner translator. CTA: Start Italian in Telegram Telegram: https://t.me/DuoIT_bot ## Portuguese Portuguese practice: AIMA residency appointments, NIF registration, housing, and daily life in Portugal. Pain points: - Basic vocabulary is not enough when you need to catch what a delivery driver, landlord, clinic receptionist, or counter clerk is saying at full speed. - European Portuguese pronunciation and endings are easy to postpone if practice is not daily. - Phrasebooks do not explain why a normal sentence went wrong. Proof points: - Practice for daily life and AIMA: Practice vocabulary for setting up your life: NIF registration, AIMA appointments, rent, and utilities. - Listen to European pronunciation: Portuguese in Portugal takes getting used to. Audio tasks help you understand what people say in Lisbon or Porto. - Learn from your mistakes: We show the rule behind the miss so grammar sticks through practice, not dull memorization. CTA: Start Portuguese in Telegram Telegram: https://t.me/DuoPT_bot ## Romanian Romanian practice: residency paperwork, IGI, housing, clinics, and daily life in Romania. Pain points: - When you are at a clinic or talking to a landlord, you need to understand short, fast requests and answer them naturally, not just read translations on a screen. - Endings change who must bring a document, sign a request, or come back tomorrow. - PDFs and videos pile up easily. Practice starts when one task, one answer, and one explanation happen today. Proof points: - Practice real-life situations: Read, listen, and build phrases you hear in offices, shops, and rental conversations. - Understand attached articles: Romanian changes words on the fly. Feedback shows how the article attached to the word and changed the meaning. - Listen, not only read: Stop depending on screen translation and learn to catch questions from officials and neighbors by ear. CTA: Start Romanian in Telegram Telegram: https://t.me/DuoNicheRO_bot ## Slovenian Slovenian practice for expats: residency paperwork, Upravna Enota, housing, local services, and daily life. Pain points: - You cannot just guess your way through Slovenian dual number and six cases; they need to be automated through practice, not just read in a table. - Complex grammar rules and everyday local wording need repeated answers inside real sentences, not just memorization. - Most popular apps skip Slovenian completely, leaving you without practice for real daily situations like renting, shopping, or local services. Proof points: - Practice vocabulary for local life: Big apps ignore Slovenian. We give you phrases for local services, rent, and everyday chats. - Handle cases and dual number: Learn to change endings correctly. If you miss, a short rule gets you back on track. - Build your own replies: Instead of memorizing a phrasebook, train yourself to build sentences for colleagues and neighbors. CTA: Start Slovenian in Telegram Telegram: https://t.me/DuoSL_bot ## Spanish Spanish practice: residency paperwork, Extranjería, housing, work, study, and daily life in Spain. Pain points: - Moving beyond the beginner level turns Spanish from a vacation hobby into a tool for comfortable daily living. - A common language still becomes hard when you need to answer quickly in a public office, shop, or family conversation. - Too many links can become another way to avoid one answer today. Proof points: - Prepare for local life: Practice vocabulary, reading, and listening for residency paperwork, renting, and daily tasks. - Turn theory into reflex: Stop collecting rule links. Choose tenses and moods automatically inside real sentences. - Understand the logic: Not sure why it is Subjuntivo and not Indicativo? The explanation after the task makes it clear. CTA: Start Spanish in Telegram Telegram: https://t.me/DuoES_bot # Legal ## Terms of Service Last updated: 03-07-2026 By using DuoNiche, you agree to the following terms. If you do not agree, please do not use the service. ### 1. Service Description The services under DuoNiche are provided by PANDORA-13 Ltd. DuoNiche provides a language learning application delivered through mobile applications, messaging platform integrations, and related web services. It is intended for personal, non-commercial educational use only. ### 2. User Responsibilities Eligibility: You must be at least 13 years old (or the minimum age of digital consent in your country) to use the service. If you are under the required age, you may not use DuoNiche. Account Security: You are responsible for safeguarding your login credentials (such as your Telegram account). We are not liable for any loss or damage arising from unauthorized access to your account resulting from your failure to secure your credentials. Acceptable Use: You agree to use the app lawfully and to refrain from misuse, reverse engineering, unauthorized automation, attempts to bypass access controls, or sharing paid content. You agree not to submit content that is illegal, abusive, harassing, defamatory, or infringes on third-party rights. We reserve the right to suspend or terminate accounts that violate these rules or abuse the service. ### 3. Subscriptions and Payments Subscriptions may be offered through mobile application stores (such as Apple App Store or Google Play), messaging platforms (such as Telegram), or direct web payment providers shown at checkout. Subscriptions are billed at the start of each billing cycle, such as monthly or yearly. Subscriptions renew automatically unless cancelled before the renewal date through the platform or payment provider where the subscription was started. ### 4. Refund Policy We may offer a free welcome gift, free trial, promotional access, or discount periods. After a paid subscription starts, payments are final and non-refundable unless required by law or by the rules of the payment platform. For subscriptions purchased through Apple App Store or Google Play, refund requests and refund decisions are handled by Apple or Google under their own policies. ### 5. Cancellation You may cancel your subscription at any time through the platform or payment provider where the subscription was started. Premium access will usually remain available until the end of the paid period unless the platform or payment provider states otherwise. Deleting your DuoNiche account does not automatically cancel subscriptions managed by external platforms or payment providers. You must cancel active subscriptions through the relevant platform or payment provider. ### 6. Account Deletion You may request deletion of your DuoNiche account in the app or by contacting [support@duoniche.com](mailto:support@duoniche.com). When your account is deleted, we remove or anonymize personal account data that is no longer needed. Some limited records may be retained where required for security, fraud prevention, legal claims, billing, accounting, tax, regulatory, or support purposes. More details are provided in the Privacy Policy. ### 7. Modification of Service We reserve the right to modify, suspend, or discontinue the service with 30 days notice where reasonably possible. We may make urgent changes without advance notice where needed for security, legal compliance, fraud prevention, or service stability. ### 8. External Terms Use of DuoNiche through third-party platforms is also subject to the terms, conditions, and privacy policies of those platforms (for example, the Apple App Store, Google Play, Telegram, or applicable web payment processors). ### 9. Disclaimer and Limitation of Liability The service is provided 'as is' and 'as available' without any warranties, express or implied. We do not guarantee that the service will be uninterrupted, error-free, or meet your specific learning goals. To the maximum extent permitted by law, DuoNiche and its affiliates shall not be liable for any indirect, incidental, or consequential damages arising from your use of the service. In no event shall our total liability exceed the amount you paid for the service in the 12 months preceding the claim. ### 10. Jurisdiction These terms are governed by the laws of Bulgaria, unless mandatory consumer protection laws in your country require otherwise. ## Privacy Policy Last updated: 03-07-2026 At DuoNiche, your privacy matters. This policy explains what data we collect, how we use it, how long we keep it, and your rights. ### 1. Data We Collect We may collect and process the following data: - Account identifiers: internal user ID, public support handle, Telegram ID, Apple ID, Google ID, email address, guest installation identifier, and similar login identifiers. - Profile data: name, username, avatar URL, language preferences, onboarding answers, and app settings. - Learning activity: exercises, answers, attempts, session statistics, streaks, progress reports, selected topics, and similar app usage data. - Feedback: feedback reason, related exercise, optional user comment, and timestamps. - Payment and subscription data: subscription status, plan, billing period, payment provider, provider transaction identifiers, and payment history needed for billing, refunds, fraud prevention, accounting, and support. - Support communications: messages you send to support and metadata needed to resolve your request. - Technical and security data: logs needed to operate the service, prevent abuse, investigate incidents, and protect users. - Product analytics data: internal user ID, app platform and version, device or browser information, language settings, subscription status, screen views, and event metadata about authentication, onboarding, learning sessions, exercise outcomes, paywalls, and checkout results. We apply data minimization principles to our product analytics. We do not transmit direct identifiers (such as email or Telegram ID) or free-form user-generated content (such as exercise answers) to our analytics provider. - Session replay data: a visual reconstruction of interactions. When session replay features are utilized to diagnose usability issues, input values are strictly masked, and designated sensitive interface areas (like payment screens) are excluded from capture. We do not intentionally collect special categories of personal data, such as health, biometric, political, religious, or precise location data. Children's Privacy: Our service is not intended for children under the age of 13 (or the applicable age of digital consent in your jurisdiction). We do not knowingly collect personal data from children. If we discover that we have inadvertently collected such data, we will delete it promptly. ### 2. Purpose of Data Use We use your data to: - provide and personalize language learning features; - authenticate your account; - save progress, preferences, and learning history; - generate progress reports; - process subscriptions and manage access; - provide customer support; - detect abuse, fraud, technical errors, and security incidents; - understand how features and user journeys are used, measure onboarding, learning, and subscription funnels, diagnose usability problems, and improve the service and user experience; - comply with legal, accounting, tax, and regulatory obligations. ### 3. Legal Bases Where GDPR applies, we process personal data based on one or more of the following legal bases: - performance of a contract, to provide DuoNiche features and paid access; - legitimate interests, including service security, support, abuse prevention, product quality, understanding feature usage, diagnosing usability problems, and improving business operations, where those interests are not overridden by your rights and interests; - legal obligations, including accounting, tax, and compliance requirements; - consent, where required by law, including for non-essential device storage or session replay where applicable. ### 4. Data Storage Data is stored securely in the European Union where possible. Some service providers may process data outside the EU. Where required, we use appropriate safeguards such as Standard Contractual Clauses or equivalent protections. Product analytics and session replay data are hosted securely within the European Union. Service providers and their subprocessors may provide support or other limited processing from outside the European Economic Area under applicable contractual and transfer safeguards. Inactive accounts may be deleted or anonymized after 12 months. ### 5. Payments and Subscriptions Depending on the platform, payments may be processed by Telegram, Polar.sh, Apple App Store, Google Play, or another payment provider shown at checkout. We do not store full payment card details. Payment providers may process your payment details under their own terms and privacy policies. Deleting your DuoNiche account does not automatically cancel an active subscription managed by Apple App Store, Google Play, Telegram, Polar.sh, or another payment provider. You must cancel active subscriptions through the platform or payment provider where the subscription was started. ### 6. Account Deletion and Data Retention You may request deletion of your DuoNiche account in the app or by contacting [support@duoniche.com](mailto:support@duoniche.com). When you request account deletion, we disable the account, revoke active sessions, remove external login identifiers, and delete or anonymize profile data and app data that is no longer needed. If identified analytics data exists, we also submit deletion or irreversible anonymization requests to product analytics providers for data linked to your internal user ID. For support, security, fraud prevention, legal claims, billing, accounting, tax, and regulatory compliance, we may retain limited records after account deletion. Retention categories: | Data category | What happens after deletion request | Retention period | | --- | --- | --- | | External login identifiers | Telegram ID, Apple ID, Google ID, email, guest installation identifier, username, name, avatar, and profile data are deleted or anonymized. | Immediately or within 30 days | | Learning activity | Exercise attempts, session data, progress reports, preferences, onboarding data, and app settings are deleted or anonymized. | Immediately or within 30 days | | Feedback | Free-text feedback comments are deleted. Feedback reason, exercise reference, internal user ID, and public support handle may be retained for product quality, abuse investigation, and support history. | Up to 5 years after deletion, unless a longer period is required for an open dispute, incident, or legal obligation | | Account deletion record | Internal user ID, public support handle, deletion status, and deletion timestamps are retained so we can prove and support deletion requests. | Up to 5 years after deletion | | Support communications | Support messages may be retained to resolve requests, investigate abuse, and defend legal claims. | Up to 24 months after ticket closure, or up to 5 years if related to a dispute or incident | | Security and fraud logs | Logs needed to protect the service, investigate abuse, prevent fraud, and maintain system integrity may be retained. | Up to 24 months, or longer if required for an active investigation | | Billing, accounting, tax, refund, and dispute records | Transaction records, invoice-related data, subscription events, provider transaction IDs, and accounting records may be retained where required by law or needed for refunds, chargebacks, fraud prevention, or audits. | Up to 10 years, or longer if required by law or an active dispute | | Identified product analytics and session recordings | Analytics profiles, events, and session recordings linked to the internal user ID are deleted or irreversibly anonymized. Aggregated data that no longer identifies a user may be retained. | Immediately or within 30 days | | Aggregated or anonymized analytics | Data that no longer identifies a user may be retained for product analytics and service improvement. | Indefinitely | | Backups | Deleted data may remain in encrypted backups until backups expire. If a backup is restored, deletion requests are re-applied where technically possible. | Up to 90 days, unless a longer disaster-recovery period applies | After account deletion, you will no longer be able to sign in with the deleted account. If you contact support, we may use your public support handle to locate the deletion record and retained support history. ### 7. Your Rights Where applicable, you may request: - access to your personal data; - correction of inaccurate data; - deletion of your data; - restriction or objection to processing; - data portability; - withdrawal of consent where processing is based on consent. To exercise your rights, contact [support@duoniche.com](mailto:support@duoniche.com). We may refuse or limit a deletion request where retention is required for legal obligations, security, fraud prevention, billing, accounting, dispute resolution, or the establishment, exercise, or defense of legal claims. ### 8. Cookies and Analytics We may use PostHog for product analytics and optional session replay. PostHog processes analytics data on our behalf as a service provider. Analytics may be associated with your internal DuoNiche user ID so that we can understand complete user journeys across authenticated sessions. The analytics software may use cookies, local storage, or equivalent mobile device storage to maintain an analytics identifier, preserve session continuity, prevent duplicate events, and remember applicable privacy choices. These technologies are not used by DuoNiche for third-party advertising or cross-site advertising profiles. Session replay features are disabled by default and may be enabled only after privacy and performance review. When enabled, input values are masked and designated sensitive areas are blocked from capture. You should not enter special-category personal data or payment card details into free-form fields in DuoNiche. Where we rely on legitimate interests for product analytics, you may object to that processing by contacting [support@duoniche.com](mailto:support@duoniche.com). Where consent is required, analytics storage or session replay will not be enabled until the required choice mechanism is available. ### 9. Service Providers and International Transfers We use service providers to operate DuoNiche, including hosting, authentication, payment, error monitoring, communications, customer support, and analytics providers. They may process personal data only for the contracted services and under appropriate data-protection terms. We use artificial intelligence features to power our language learning tools. We do not use your personal data or free-form inputs to train our own foundational AI models. Where we use third-party AI providers (such as LLM APIs), data is processed solely to provide the feature to you and is not used by those providers to train their public models. For product analytics and optional session replay, we use PostHog Cloud EU. Information about PostHog's privacy and security practices, data processing terms, and subprocessors is available through PostHog's public website and Trust Center. Where personal data is transferred outside the European Economic Area, we use an applicable transfer mechanism and safeguards, such as an adequacy decision or Standard Contractual Clauses. ### 10. Data Security Communications are encrypted. We apply technical and organizational measures to protect personal data against unauthorized access, loss, misuse, or alteration. ### 11. Policy Acceptance By accessing or using DuoNiche, you acknowledge that you have read and understood this Privacy Policy. This acknowledgement does not replace consent where consent is required by law. ### 12. Contact Company Name: PANDORA-13 Ltd. Company Number (EIK): 202409460 Registered Address: Bulgaria, Burgas 8000, Burgas Municipality, 78 Makedonia St., floor 5, apt. 7 The services under DuoNiche are provided by PANDORA-13 Ltd. Email: [support@duoniche.com](mailto:support@duoniche.com) ## Refund & Dispute Policy Last updated: 03-07-2026 Refund, trial, promotion, and dispute handling terms. ### Refund & Dispute Policy We may offer a free welcome gift, free trial, promotional access, or discount periods so you can try DuoNiche before your first payment. For users residing in the European Union or UK: By subscribing to our premium features and accessing them immediately, you explicitly consent to the immediate performance of the contract and acknowledge that you lose your 14-day right of withdrawal once access has been granted. After your subscription starts, payments are final and non-refundable unless required by law or by the rules of the payment platform. If you purchased through Apple App Store or Google Play, refund requests are handled entirely by Apple or Google. For purchases made through other platforms or direct payment providers, the refund process is handled by the respective provider used at checkout. If you believe a charge was made in error or have concerns, contact us at [support@duoniche.com](mailto:support@duoniche.com) or via the [Telegram support bot](https://t.me/DuoNiche_support_bot). Before filing a dispute or chargeback with your bank or payment provider, we strongly encourage you to contact our support team. Unjustified or fraudulent chargebacks may result in the immediate suspension or termination of your DuoNiche account. ### Promotional Terms A promotional discount may be available during a welcome gift, trial, or other limited promotional period. Unless stated otherwise, promotional offers apply only to your first eligible subscription and cannot be combined with other promotions. We may change or withdraw promotional offers at any time, subject to applicable law and platform rules. ## Cancellation Policy Last updated: 03-07-2026 How cancellation works for recurring DuoNiche subscriptions. ### Cancellation Policy Your subscription renews automatically unless cancelled before the billing date. You can cancel your subscription through the platform or payment provider where it was started (for example, through your Apple or Google account settings, or the relevant web payment dashboard). Deleting your DuoNiche account does not automatically cancel active subscriptions managed by external platforms or payment providers. Access will remain available until the end of the paid period unless the platform or payment provider states otherwise. ## Company Info Legal company details for DuoNiche. ### Company Info Company Name: PANDORA-13 Ltd. Company Number (EIK): 202409460 Registered Address: Bulgaria, Burgas 8000, Burgas Municipality, 78 Makedonia St., floor 5, apt. 7 The services under DuoNiche are provided by PANDORA-13 Ltd. Email: [support@duoniche.com](mailto:support@duoniche.com) ## Customer Service Contact How to contact DuoNiche customer support. ### Customer Service Contact Telegram: [Telegram support bot](https://t.me/DuoNiche_support_bot) Email: [support@duoniche.com](mailto:support@duoniche.com) We aim to respond within 24 hours on weekdays.