PRIVACY POLICY
Privacy Policy
Tokinaoshi / Established November 15, 2026 / Last revised November 15, 2026
Summary of this policy
Tokinaoshi is an app with no developer server. There is no account registration or sign-in, and it never asks for your name or email address. It contains no ads, no analytics tools, no crash reporting, and no SDKs from other companies. Your study records and settings are saved only on your iPhone and in your own iCloud. The developer never receives them.
1. Provider
| Provider | Ryo Tsuzukihashi (independent developer / TsuzuKit) |
|---|
| App name | Tokinaoshi (ときなおし) |
|---|
| Scope | The iPhone app and the pages under https://tokinaoshi.tsuzukit.com/, including this page |
|---|
| Contact | ryo.tsuzukihashi@tsuzukit.com |
|---|
2. What is handled on your iPhone and in your iCloud
| Study records | For each question: how many times you answered it and whether you were right, the next date it will be shown, and flags. Also the number of sessions you finished and your mock exam results |
|---|
| Settings | Exam date, questions per day, the time of the daily reminder, and whether you finished the introduction |
|---|
Study records are saved on your iPhone, and a backup is kept in the iCloud of your Apple Account (Apple's key-value storage). This is so that you can continue with the same Apple Account after switching devices or reinstalling the app. If you are not signed in to iCloud, the records stay only on your iPhone. The contents of iCloud are managed by Apple, and the developer can neither see nor retrieve them. Settings are saved only on your iPhone.
3. Network use, and what the app does not contain
The only network use by the app is saving the backup to iCloud described above. Every feature for answering questions works without a connection. The app does not contain any of the following.
- Ads
- In-app purchases or subscriptions
- Account registration or sign-in
- Analytics tools that measure usage
- Crash reporting
- SDKs from other companies
4. Features that run on your iPhone
| Rephrasing explanations | On supported iPhones, Apple Intelligence (the language model on the iPhone) can rephrase an explanation in simpler words. Processing happens on the iPhone, and questions and explanations are not sent anywhere |
|---|
| Daily reminder | If you turn it on, a notification is shown at the time you chose. It is scheduled on the iPhone and is not sent from a developer server |
|---|
5. Links out of the app
The only links from the app to outside pages are to this site's About page, Terms of Use, Privacy Policy, and “Report a Mistake” page. They open in Safari. Only the question number (for example, ds-DS-091-1) is passed to the “Report a Mistake” page. Who you are and how you answered are not passed.
6. Purchase
The app is a paid app on the App Store. Payment is processed by Apple, and payment information such as card details never reaches the developer. The app never asks you to buy anything inside it.
7. Purposes of use
Study records and settings are used only to run the app. When you contact us or report a mistake, the email address and content you send are used only to reply and to fix the questions. They are not given to third parties without your consent, except where required by law.
8. Deleting your data
“Erase All Study Records” in the app's Settings erases the records on your iPhone and the backup in iCloud. They are also erased from your other devices on the same Apple Account. The developer does not hold a copy.
9. About this website
This site (tokinaoshi.tsuzukit.com) uses no cookies, no access analytics, and no ads. The site is served by GitHub Pages, and delivery logs (such as IP addresses) are handled according to GitHub's General Privacy Statement.
10. Revisions
When this policy changes, this page is rewritten and the revision date above is updated. Important changes are also described in the app's update notes.
Contact
For questions about this policy, please write to ryo.tsuzukihashi@tsuzukit.com.
ときなおし