Terms of Use
Kartella Studio
Last updated: August 2026
1. About these terms
These terms set out the conditions for using the iOS app "Kartella Studio" (the app), provided by freetokyo (we, us). By using the app you are taken to have accepted them.
2. What the app is
The app is a tool for storing, displaying and exporting records you enter. A displayed balance is calculated from the ledger you maintain; it does not settle what was agreed between you and a student.
The balance summary the app produces is your own business record. It is not a receipt and it is not proof of payment. The summary itself says so on its last line.
How prepaid class passes are treated in law varies by how you trade and where. The app offers no advice on this, and it does not carry out or guarantee any legal obligation you may have. Please consult a professional where necessary.
The app gives no advice about health, injury, pregnancy or any other medical matter.
3. Your data
The app does not communicate and we never receive your data. See the Privacy Policy for details.
Managing your data, including taking backups, is your responsibility. We have no way to recover data lost through a lost, broken or erased device.
Backup files are not encrypted and contain student names and records. Where you store or send them is your decision.
4. Purchases
The core features are free. "Full access" is a one-time in-app purchase (non-consumable), not a subscription. Nothing renews and there is nothing to cancel.
Purchases are tied to your Apple Account. Restore purchases is available from both the paywall and Settings. Refunds follow Apple's policy and must be requested from Apple.
Records created within the free tier remain fully usable after you reach a limit — viewing, using, voiding, exporting and deleting all continue to work. Only adding new items is restricted.
5. Prohibited use
You must not use the app for any unlawful purpose, to infringe anyone's rights, or reverse-engineer it.
6. Changes to these terms
If these terms change, this page is updated. Continuing to use the app after a change means accepting the revised terms.
7. Contact
Limitation of liability (overriding)
Notwithstanding any other provision of these terms, Except in cases of our willful misconduct or gross negligence, our liability for any damages arising from your use of the app is limited to the amount you paid us for the app. Where such a limitation is not permitted by mandatory law, we are liable to the extent that law provides.