Convella: Terms & Conditions

Last updated: October 25, 2026

These Terms & Conditions ("Terms") are a legal agreement between you and Convella ("we", "us", or "our") governing your use of the Convella mobile application and related services (the "App"). By downloading, accessing, or using the App, you agree to these Terms and to our Privacy Policy, which is incorporated into these Terms by reference. If you do not agree, do not access or use the App.

1. The App and the services

Convella is an English-proficiency learning app. It provides interactive, conversation-based lessons, speaking and writing practice, corrections, scoring, and feedback generated by automated AI systems, together with supporting features such as streaks, activity history, etc. (together, the "Services").

We may add, change, suspend, or discontinue any part of the Services — including individual features, lessons, or content — at any time. Where a change materially reduces the Services you have paid for, we will act as required by applicable consumer law and by the App Store's policies.

2. Eligibility

The App is intended for users 13 years of age or older. If you are under the age of majority in your jurisdiction, you may use the App only with the involvement and consent of a parent or legal guardian who agrees to these Terms. You represent that the information you provide is accurate and that you are legally able to enter into these Terms, on your own behalf and not on behalf of anyone else without their authorization.

3. Your account

You may need an account to use certain features. You can register using Sign in with Apple, Google Sign-In, or an email-based account.

  • You must provide accurate, complete, and current registration information, and keep it up to date.
  • You must not impersonate another person, use a name you are not entitled to use, or access another user's account.
  • You are responsible for keeping your credentials confidential and for all activity that occurs under your account.
  • You must notify us promptly at of any unauthorized use or suspected breach of security. We are not liable for losses caused by unauthorized use of your account that results from your failure to keep your credentials secure.

We may refuse a registration, or suspend or terminate an account, where we reasonably believe these Terms or applicable law have been breached, or where necessary to protect the App or other users.

4. Notifications and communications

The Services may send you push notifications, in-app messages, reminders, and service emails (for example, daily practice reminders, streak reminders, account and billing notices). You can turn push notifications off at any time in iOS Settings or in the App's notification settings. We may still send you non-promotional service messages about your account, purchases, security, or material changes to these Terms.

5. License to use the App

Subject to these Terms, we grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable license to download and use the App for your personal, non-commercial learning use. You may not copy, modify, distribute, sell, lease, sublicense, publicly display, create derivative works from, reverse-engineer, or attempt to extract the source code of the App, except where such restriction is prohibited by law. No rights are granted other than those expressly stated here.

6. Subscriptions, purchases, and billing

The App may offer paid features or subscriptions (for example, a "Pro" plan). Purchases are processed by the Apple App Store under your Apple ID, and Apple's terms and refund policies apply. We do not receive or store your payment card details.

  • Fees: You agree to pay the fees and charges presented to you at the time of purchase, including any applicable taxes, for all purchases made through your Apple ID or your account.
  • Auto-renewal: Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Your Apple ID account is charged for renewal within 24 hours before the period ends.
  • Managing and cancelling: You can manage or cancel subscriptions in your Apple ID account settings. Deleting the App does not cancel a subscription. Cancellation takes effect at the end of the current billing period; you keep access until then.
  • Free tier: If you cancel or do not subscribe, your account keeps access to the parts of the Services we make available for free, which we may change over time.
  • Refunds: Purchases are handled by Apple; refund requests are subject to Apple's policies. Except where required by law, payments are non-refundable and unused periods are not refunded.
  • Statutory withdrawal rights: If you are a consumer in the EU/EEA or the UK, you may have a statutory right to withdraw from a purchase within 14 days. These Terms do not remove that right; because Apple is the merchant of record, exercise it through Apple.
  • Price changes: We may change prices or the features included in a plan prospectively. Material changes will be communicated as required by the App Store and applicable law, and where consent is required for a price increase, your subscription will not renew at the new price until you agree.

7. AI-generated content and educational disclaimer

Convella uses generative AI systems to provide lessons, conversation, corrections, scoring, and feedback.

  • AI output may contain errors and must not be relied upon as professional, certified, or authoritative language instruction. We do not guarantee any specific learning outcome, score, certification, or level of proficiency. The App is a learning aid, not a substitute for accredited instruction or examination.
  • AI output is generated automatically and depends heavily on what you say or write. Output produced in response to your input is not reviewed, endorsed, or adopted by us, and you are responsible for the input you provide.
  • You must not use AI features to produce unlawful, hateful, harassing, sexually explicit, or otherwise abusive content. We may restrict or block features that are misused this way.
  • Do not enter sensitive personal information — such as financial account details, government identifiers, or health information — into conversations or practice exercises.

8. No medical, psychological, or emergency services

The App is an English-learning tool. It does not provide medical, psychological, mental-health, legal, or financial advice, and it must not be used as a substitute for professional care. If you have a medical or mental-health emergency, call your local emergency number or go to the nearest emergency service. If you are thinking about harming yourself or others, stop using the App and contact emergency services or a crisis helpline immediately.

9. User content and conduct

You retain ownership of the content you submit, including speech recordings, transcripts, and text ("User Content"). You grant us a worldwide, non-exclusive, royalty-free license to host, store, reproduce, transmit, and process your User Content solely to operate the App and provide the Services to you — for example, transcription, AI feedback, and progress tracking — as described in our Privacy Policy. This license ends when you delete the User Content or your account, except for copies we must retain for a limited period for backup, security, dispute resolution, or legal compliance.

You represent that you have the rights necessary to submit your User Content and that it does not infringe or violate anyone's rights. You are solely responsible for your User Content and for any consequences of submitting it.

10. Feedback

If you send us ideas, suggestions, or feedback about the App or the Services, we may use them for any purpose without restriction, obligation, or compensation to you in any manner.

11. Acceptable use

You agree not to, and not to permit or help anyone else to:

  • Use the App for any unlawful, fraudulent, deceptive, or harmful purpose;
  • Submit or transmit content that is defamatory, abusive, harassing, threatening, hateful, obscene, or that invades another person's privacy;
  • Impersonate any person or misrepresent your affiliation with any person or entity;
  • Interfere with, disrupt, overload, or attempt to gain unauthorized access to the App, its accounts, or its systems;
  • Upload viruses, malware, or any code intended to disrupt or damage the App or any system;
  • Use bots, scrapers, crawlers, or other automated means to access the App, except as we expressly permit;
  • Reverse-engineer, decompile, or circumvent security, authentication, rate limits, entitlement checks, or usage limits, or access paid features without paying for them;
  • Resell, sublicense, or otherwise make the App or the Services available to third parties;
  • Misuse AI features to generate unlawful, harmful, or abusive content.

We may investigate suspected breaches and may suspend or terminate access for violations.

12. Intellectual property

The App, including its software, design, text, graphics, audio, learning content, trademarks, and its overall look and feel (excluding your User Content), is owned by Convella or its licensors and is protected by intellectual-property laws. These Terms do not grant you any rights to our trademarks or branding.

13. Reporting intellectual-property infringement

If you believe in good faith that content available in the App infringes your intellectual-property rights, send a written notice to identifying the content, its location in the App, your rights in it, and your contact details. We will review the notice and remove or disable access to infringing content where appropriate. We may terminate the accounts of repeat infringers.

14. Third-party services and links

The App relies on third-party services, including Apple, Google, RevenueCat, Mixpanel, and Firebase. The App may also contain links or references to third-party websites, applications, or content we do not control. Your use of those services and sites is governed by their own terms and privacy policies. We do not endorse them, and we are not responsible for their availability, accuracy, content, or practices.

15. Platform provider rules

You obtain the App through an app-store platform provider (for example, the Apple App Store). Your use of the App is also subject to that provider's usage rules, which are incorporated into these Terms by reference. It is your responsibility to know which rules apply to you. Where a platform provider's usage rules conflict with these Terms on matters concerning that provider's own representations, warranties, obligations, or liability, the platform provider's rules prevail. You represent that no law or usage rule prohibits you from downloading or using the App.

16. Disclaimers of warranty

THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, SECURITY, COMPATIBILITY, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, TIMELY, SECURE, OR ERROR-FREE, THAT DEFECTS WILL BE CORRECTED, OR THAT AI OUTPUT WILL BE ACCURATE, COMPLETE, OR SUITABLE FOR ANY PURPOSE. Some jurisdictions do not allow certain warranty exclusions, so some of the above may not apply to you, and nothing here affects consumer warranties that cannot be excluded by law.

17. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, Convella, ITS OFFICERS, DIRECTORS, EMPLOYEES, AND SUPPLIERS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF DATA, PROFITS, REVENUE, SAVINGS, OR GOODWILL, ARISING FROM OR RELATING TO YOUR USE OF OR INABILITY TO USE THE APP, ON ANY THEORY OF LIABILITY. OUR TOTAL LIABILITY FOR ANY CLAIM WILL NOT EXCEED THE GREATER OF THE AMOUNT YOU PAID US IN THE 12 MONTHS BEFORE THE CLAIM OR USD 50. Some jurisdictions do not allow these limitations, so they may not fully apply to you. Nothing in these Terms limits liability for death or personal injury caused by negligence, for fraud, or any other liability that cannot be limited by law.

18. Indemnification

To the extent permitted by applicable law, you agree to indemnify and hold harmless Convella, its officers, directors, and employees from claims, damages, and expenses (including reasonable legal fees) arising from your misuse of the App, your User Content, or your violation of these Terms or of third-party rights. We may assume the exclusive defense and control of any matter subject to indemnification by you, at our expense, and you will cooperate with us. You will not settle any such matter without our prior written consent.

19. Termination

You may stop using the App and delete your account at any time from within the App. We may suspend or terminate your access if you violate these Terms, or where necessary to protect the App, our users, or to comply with law — with notice where practicable, and immediately where a delay would cause harm or where the law requires it. Termination does not relieve you of obligations that accrued before it, and provisions that by their nature should survive termination — including ownership, warranty disclaimers, indemnification, limitations of liability, and governing law — will survive.

20. Governing law and dispute resolution

These Terms are governed by the laws of India, without regard to conflict-of-laws rules. Mandatory consumer-protection rights in your country of residence still apply and are not overridden by this clause. Disputes will be resolved in the competent courts of India, unless applicable law grants you the right to bring proceedings elsewhere. Before starting formal proceedings, we encourage you to contact us at so we can try to resolve the matter informally.

21. Apple App Store additional terms

The following applies when you obtain the App from the Apple App Store:

  • These Terms are between you and Convella only, not with Apple. Apple is not responsible for the App or its content.
  • Your license is limited to use on Apple-branded devices you own or control, per the App Store Terms of Service.
  • Apple has no obligation to provide maintenance or support for the App.
  • If the App fails to conform to any applicable warranty, you may notify Apple, and Apple may refund the purchase price; to the maximum extent permitted by law, Apple has no other warranty obligation for the App.
  • Apple is not responsible for addressing any claims by you or a third party relating to the App, including product-liability claims, claims that the App fails to conform to a legal requirement, and claims under consumer-protection or similar legislation.
  • Apple is not responsible for the investigation, defense, settlement, or discharge of any third-party intellectual-property infringement claim relating to the App.
  • You represent that you are not located in a country subject to a U.S. Government embargo or designated as a "terrorist supporting" country, and that you are not on any U.S. Government list of prohibited or restricted parties.
  • Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

22. Changes to these Terms

We may update these Terms from time to time. When changes are material, we will update the "Last updated" date and, where appropriate, notify you in the App before they take effect. Your continued use after the changes take effect constitutes acceptance. If a change is unacceptable to you, stop using the App and delete your account.

23. Miscellaneous

  • Entire agreement: These Terms and the Privacy Policy are the entire agreement between you and us regarding the App, and supersede any prior understanding on the same subject.
  • Severability: If any provision is held illegal, invalid, or unenforceable, the remaining provisions stay in full force and effect.
  • No waiver: Our failure to enforce any right or provision is not a waiver of it unless we acknowledge it in writing.
  • Assignment: You may not assign or transfer these Terms without our written consent. We may assign these Terms in connection with a merger, acquisition, or sale of assets, provided your rights are not reduced.
  • Force majeure: We are not liable for delays or failures caused by events beyond our reasonable control, including outages of third-party services we depend on.
  • Notices: We may give notice through the App, by email to the address on your account, or by posting an update to these Terms. Send notices to us at .
  • Data and connectivity: The App requires an internet connection and may consume mobile data — for example, when streaming or uploading speech audio. Your carrier's charges are your responsibility.
  • Language: These Terms are drafted in English. Where we provide a translation, the English version prevails to the extent of any conflict, unless applicable law requires otherwise.

24. Contact us

If you have any questions or queries about these Terms and Conditions or our App and/or Services in general, please do not hesitate to contact us via e-mail at:

BY USING THE APP, YOU ACKNOWLEDGE THAT YOU HAVE READ AND UNDERSTOOD THESE TERMS AND CONDITIONS AND AGREE TO BE BOUND BY THEM.