Mosyn Terms of Service
Effective date: 29 July 2026
These Terms are an agreement between you and Milo Yvan Presedo (“Mosyn,” “we,” “us”) covering the Mosyn Android application, the Mosyn MCP connector, and the servers behind them (together, the “Service”). By using the Service you agree to them. If you do not agree, do not use the Service.
1. Who may use the Service
Mosyn is not intended for children under 13. People aged 13–15 may use the Android app's local and offline study features in version 1, but may not create a cloud account, connect an assistant, or make a purchase. You must be at least 16, meet any higher minimum age imposed where you live, and have any legal capacity or permission required for a paid transaction before using those cloud, connector, or paid features. If you use the Service on behalf of an organisation, you confirm you are authorised to bind it.
2. Your account
You sign in through Google or a single-use link delivered to your verified email address. Keep those accounts secure; you are responsible for activity under your Mosyn account. Tell us at mosyn@lycatra.com if you believe your account has been used without your authorisation.
3. What the Service does
Mosyn stores study sets and cards, syncs them to your devices, and lets you connect an AI assistant that can create and edit that content and author custom study experiences on your behalf. Studying happens on your device.
4. Your content
Your study content is yours. You keep all rights in it. You grant us only the licence we need to operate the Service for you: to store, process, resize, transmit, and display your content on your devices and to your connected assistants, and to make backups.
You are responsible for what you put into the Service and for what you direct an assistant to put into it, including that you have the rights needed for any image, audio, or text that you or your assistant supply or fetch from a URL. Do not upload or direct us to fetch content you are not entitled to use.
5. Connected assistants
When you connect Claude, ChatGPT, or another MCP client, you authorise it to read and change your Mosyn content on your behalf. Actions an assistant takes with your grant are treated as your actions. Assistant providers are independent third parties; we do not control their models, outputs, availability, or policies. You can revoke a grant at any time by disconnecting Mosyn in your assistant's settings, or by deleting your Mosyn account.
6. Custom study experiences
A custom experience is code written by an AI assistant at your direction, stored on your account and run on your device inside a restricted sandbox. We do not write, review, endorse, or verify that code. It is provided as-is, and it may be wrong, incomplete, or unhelpful. The sandbox is designed to prevent an experience from reaching the network or the rest of your device, but no sandbox is a guarantee; do not put secrets into experience code or content.
7. Acceptable use
Do not use the Service to:
- break the law, or infringe anyone's intellectual-property or privacy rights;
- store or distribute malware, or attempt to escape the experience sandbox, escalate privileges, or reach another user's data;
- probe, scrape, overload, or otherwise interfere with the Service or the infrastructure behind it, or circumvent plan limits or rate limits;
- resell or redistribute access to the Service.
8. Plans, payment, and cancellation
Mosyn has a free plan with stated limits and a paid plan. The Google Play edition sells paid plans through Google Play. The direct edition sells annual and lifetime access through Lemon Squeezy. The provider shown at checkout handles payment, renewal, cancellation, taxes, and refunds under its own terms; manage a renewable subscription through that provider. A subscription renews until you cancel. Access to paid features ends when the entitlement ends. Current localised prices and limits appear in the Android app before purchase.
9. Availability and changes
We may change, add, or remove features, and we may set or adjust technical and plan limits. We will not make a change that removes access to content you already stored without giving you a reasonable way to retrieve or delete it. We may suspend the Service for maintenance, and we do not promise uninterrupted availability.
10. Ending the agreement
You can stop using the Service at any time and delete your account from Settings › Delete account in the app, which removes your data as described in the Privacy Policy. We may suspend or terminate an account that breaches these Terms, or where we must for legal or security reasons. Where it is reasonable and lawful to do so, we will give notice and an opportunity to fix the problem first.
11. Disclaimers
The Service is provided “as is” and “as available.” To the fullest extent permitted by law, we disclaim all implied warranties, including merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the Service will be uninterrupted or error-free, that content generated by an AI assistant will be accurate, or that studying with Mosyn will produce any particular result. Nothing in these Terms limits rights you have under consumer-protection law that cannot be limited by agreement.
12. Limitation of liability
To the fullest extent permitted by law, we are not liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, lost data, or loss of goodwill. To the fullest extent permitted by law, our total liability arising out of or relating to the Service is limited to the greater of the amount you paid us for the Service in the twelve months before the event giving rise to the claim, or US$20. These limits do not apply where the law does not allow them.
13. Changes to these Terms
We may update these Terms. We will post the updated version at this URL and change the effective date. For a material change we will give reasonable advance notice where the law requires it. Continuing to use the Service after a change takes effect means you accept the updated Terms.
14. Governing law
These Terms are governed by the laws of Switzerland, without regard to conflict-of-laws rules, except where mandatory law in your country of residence provides otherwise.
15. Contact
Questions about these Terms: mosyn@lycatra.com
Publisher: Milo Yvan Presedo