1. Agreement to these terms
These Terms of Service (“Terms”) are an agreement between you and Miyu (“Miyu”, “we”, “us”) for the Miyu website at miyu.avizi.co, the Miyu app, and the optional Miyu Sync service (together, the “Service”).
By using the Service, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the Service.
If you use the Service for an organisation, you confirm that you have authority to accept these Terms for that organisation.
2. Who can use Miyu
You must be at least 13 years old and old enough to consent to digital services in your country. If you are under 18, use the Service only with permission from a parent or guardian.
You must be able to enter into a binding agreement and must not be barred from using the Service under applicable law.
The free local-first app can be used without an account. Miyu Sync requires an account.
3. The Service
Miyu is a local-first spaced repetition app. The app is free to use. You can add courses and cards, study, and export your collection without creating an account.
The source code is published under the AGPL-3.0-or-later licence. That licence governs your use of the source code. These Terms govern the hosted Service and the official builds we distribute.
We may add, change, or remove features, and we may impose limits on storage or usage where needed to protect the Service or other users.
App stores and other third-party platforms may have their own terms that apply to your download or purchase.
4. Accounts
Miyu Sync requires an account with a valid email address and password. Provide accurate information and keep it up to date.
You are responsible for keeping your password and devices secure and for activity carried out through your account. Tell us promptly at support@miyu.avizi.co if you believe your account has been compromised.
We may require email verification and may suspend an account if needed to protect the Service, investigate abuse, or comply with the law.
5. Miyu Sync, trials, and billing
Miyu Sync costs $4.99 USD per month after a 14-day free trial and includes up to 10 GB of cloud storage. The price, trial length, and included storage shown at checkout are the ones that apply to your purchase.
Subscriptions renew automatically at the end of each billing period until cancelled. Cancel through “Manage subscription” in the app, or through the store or payment portal where you bought the subscription. Cancellation stops the next renewal, and you keep access until the end of the period you paid for, unless the law says otherwise.
RevenueCat handles subscription management. Web and desktop purchases use RevenueCat Billing with Stripe as the payment gateway. iOS and Android purchases use Apple’s App Store or Google Play billing. Payment card details go to those providers, not to Miyu.
A trial converts to a paid subscription unless you cancel before it ends. Trial eligibility is determined at checkout.
We may change the price or plan. We will give notice before a change applies to you, and changes do not apply retroactively. If you do not agree, cancel before the change takes effect.
Except where required by law, payments are non-refundable. Mandatory refund, cancellation, and withdrawal rights are not affected. For purchases made through an app store, contact that store first.
If a payment fails, we may pause sync after any grace period. Your local collection remains available, and you can keep studying without sync.
Taxes are shown or handled at checkout as required.
6. Your content
You keep ownership of the notes, decks, cards, review history, and other content you create in Miyu (“Your Content”). We do not claim ownership of it.
To operate Miyu Sync and cloud backups, you give us a limited, non-exclusive licence to store, transmit, and process Your Content only as needed to provide those features. This includes storing sync changes and backups in your private object-storage prefix. It does not give us the right to publish Your Content or use it for advertising.
You are responsible for Your Content and for having the rights needed to store it. Do not use the Service to store material that violates the law or another person’s rights.
Deleting data in the app removes it from that device. It does not necessarily delete cloud backups or synced copies. You can delete cloud backups in the app, and you can ask us to close your account and delete your cloud data.
7. Acceptable use
You agree not to:
- use the Service unlawfully or to infringe copyright, privacy, or other rights;
- attempt to access another person’s account, data, or storage prefix;
- interfere with the Service, bypass rate or storage limits, or introduce malware;
- use the Service to send spam or to store or distribute unlawful or harmful material;
- resell or operate the hosted Service for others without our permission, except as permitted by the AGPL-3.0-or-later licence;
- misrepresent your identity or use the Service to deceive others.
We may suspend or remove access if we reasonably believe you have broken these rules. Where practical, we will explain why and give you a chance to respond.
8. Availability, changes, and termination
We work to keep Miyu available, but the Service is provided without an uptime guarantee. Sync depends on your network, app stores, Cloudflare R2, RevenueCat, and other third parties.
Keep your own backups. Your local collection is the authoritative copy, and the app can export a verified backup at any time.
We may change, suspend, or discontinue all or part of the Service. If we discontinue Miyu Sync, we will stop charging and give you a reasonable opportunity to export your data.
You may stop using Miyu at any time. You can cancel your subscription and delete your local data in the app. To close a sync account, contact support.
We may suspend or end your access if you materially breach these Terms, do not pay, create a security or legal risk, or if we are required to by law. Where practical, we will give notice and a chance to fix the issue.
When the agreement ends, your licence to use the Service ends. Local data stays on your device, and we delete server data as described in the Privacy Policy.
9. Disclaimers
To the fullest extent permitted by law, the Service is provided “as is” and “as available”. We do not warrant that it will be uninterrupted, error-free, or that data will never be lost.
Miyu does not provide medical, legal, financial, or other professional advice. Course content is educational material, not a substitute for professional advice.
Nothing in these Terms excludes a guarantee, warranty, or remedy that cannot be excluded under the law that applies to you.
10. Limitation of liability
To the fullest extent permitted by law, we are not liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, revenue, goodwill, or data.
If we are liable, our total liability for all claims relating to the Service in any 12-month period is limited to the greater of the amount you paid us for the Service in that period or USD 50.
These limits do not apply to fraud, wilful misconduct, gross negligence, death or personal injury caused by negligence, or any liability that cannot be limited by law.
11. Changes to these terms
We may update these Terms. The updated version will be posted at this page with a new date.
If a change is material, we will give reasonable notice on the website, in the app, or by email before it takes effect.
By continuing to use the Service after the effective date, you accept the updated Terms. If you do not agree, stop using the Service and cancel any subscription.
12. Governing law and disputes
These Terms do not remove mandatory consumer protections in your country of residence.
Before starting formal proceedings, you agree to contact us and try to resolve the dispute informally.
If we cannot resolve a dispute informally, either party may bring a claim in a court that has jurisdiction under applicable law. Nothing prevents either party from seeking urgent injunctive relief.
