Last updated: 20 August 2026
We do not collect or transmit any personal information.
Whatever you do in our apps — your progress, your settings, your saved data — stays on your device.
There are no accounts, no sign-in, no analytics, no advertising and no tracking of any kind.
The only exception is a purchase. In apps that offer one, purchase information is sent to the app store and to our purchase-management provider so that your purchase can be restored. Nothing that identifies you personally is sent.
This policy applies to every app published by Kanishi Studio on the App Store and Google Play, including any app we release in future. It covers all of them whatever their type — games, study apps and everything else.
It does not cover our web services, which run on accounts and servers and have their own privacy policies.
Questions, bug reports and privacy enquiries: cr.hearts@icloud.com. We reply as soon as we can.
Nothing. We do not collect your name, email address, location, contacts, photos, device identifiers or any other personal information.
Whatever an app saves while you use it — how far you have got, your history, anything you have marked or unlocked, and your settings — is stored only on your device, and is never sent anywhere. Our apps run offline.
Your data is not shared with anyone, because it never leaves your device. We use no analytics service, embed no advertising SDK, and carry out no behavioural tracking or profiling.
The one exception is purchases. In apps that offer an in-app purchase or a subscription, we use RevenueCat together with the app store (Apple or Google) to complete the purchase, to restore it if you reinstall or change device, and to check whether it is active. What is sent is limited to which product was purchased, whether a purchase exists, and an anonymous identifier generated automatically for that purpose. No name, email address or other personally identifying information is sent, and none of it is used for advertising or tracking. RevenueCat's handling of that information is governed by its own privacy policy. Apps sold as a paid download, with nothing to buy inside them, use no purchase-management provider at all.
Deletion. Deleting the app erases everything it has stored. Where an app has a "Reset data" item in its settings, that erases the same data without removing the app.
Export. Where an app offers it, you can save your data as a file on your device from the settings screen.
Because your data lives only on your device, it does not follow you to a new device. Where an app offers an export file, carry that across.
Depending on the app, a purchase is a paid download, a one-time in-app purchase, or a subscription, and it is always made through the App Store or Google Play. Payment and billing are handled by Apple or Google under their own privacy policies. Our apps keep only an "unlocked or not" flag on your device and never receive your payment details. A subscription can be viewed or cancelled at any time in your App Store or Google Play account settings.
Our apps are made for a general audience. Because we collect no personal information from anyone, no additional information is obtained regardless of age. Purchases go through the store's parental approval and Family Sharing mechanisms.
We may revise this policy from time to time. Significant changes will be noted in the store description of the apps concerned.
Questions, bug reports and privacy enquiries: cr.hearts@icloud.com
Our study apps are independent. They are not affiliated with, endorsed by, or connected to any examination board, including Cambridge Assessment International Education.