Privacy Policy
This policy explains how YOSOMICHI (“the app”) handles personal data and information about the people who use it.
1. Who is responsible
YOSOMICHI is operated by tsyk-app, a sole proprietorship.
Contact: [email protected]
2. Accounts
No account is required. From the moment you open the app you can use every feature anonymously. We do not ask for a phone number or any other contact detail.
Signing in with Apple or Google is optional and serves a single purpose: carrying your data across to another device if you replace or lose this one. Nothing is restricted if you do not sign in. If you do sign in, we keep the email address attached to that account (including the relay address Apple creates when you choose Hide My Email) solely to verify that it is you and to carry your data across. We never use it to send you newsletters or announcements. If you do not sign in, we do not collect an email address.
3. Data we collect
3.1 Data needed to provide the app
- The paths you are given and what you did with them (opened, accepted, skipped, completed)
- Your answer to the post-path question and the one follow-up question
- Answers to the optional questions, where you choose to give them
- Settings: language, time zone, start of the week, notification time
- Only if you sign in: the email address of that account (see section 2)
We use this to choose the following days’ paths and to build the map of you shown inside the app. The email address is the exception: it is used only to verify you and carry your data across, never for choosing paths or building the map.
3.2 Data we collect only with your consent
- Usage data: which screens are opened, which actions are taken, where people stop. We ask once, early on, and you can change the answer at any time in Settings. Declining restricts nothing.
3.3 Data collected to diagnose faults
- Technical details when the app terminates unexpectedly: device model, operating system version, and where the failure occurred. This never includes text you typed or the content of your activity.
4. Data we do not collect
The following never reaches us. It is not filtered out after the fact — no mechanism to send it exists.
- The notes you write in the app. They are encrypted and held on your device only. They are never sent to our servers, never used for analysis, and never placed on a shared image.
- Location data, precise or approximate
- Contacts, photos, camera, microphone
- Your name, date of birth, or gender
5. Recipients and processors
We do not sell your data. To operate the app we use processors in the following categories, each bound by a contract governing how the data may be handled and subject to our oversight.
| Category of recipient | Role | Data received |
|---|---|---|
| Cloud service provider | Data storage and platform operation | The data in 3.1 |
| Analytics provider | Usage analysis | The data in 3.2, only with your consent |
| Error-monitoring provider | Fault records and diagnosis | The data in 3.3 |
| Subscription management provider | Managing subscription status | Subscription status |
Data may be processed in Japan and in the countries where the processors above operate their services. Where data is transferred outside your country, we put appropriate safeguards in place, including standard contractual clauses, so that an adequate level of protection is maintained. We will tell you the countries involved and the safeguards applied if you ask us.
6. Retention
| Kind | Retention period |
|---|---|
| Your paths and answers | Not deleted automatically; kept until you delete them |
| Usage records | Up to 12 months |
| Fault records | Up to 30 days |
| Email address of a signed-in account | Until you delete your account |
| Authentication and security logs | 180 days |
| Deletion job records | 30 days (non-identifying receipt: 180 days) |
| Notes on your device | Until you erase them or remove the app |
7. Your rights and controls
- Access and portability — export your data as JSON and CSV from Settings.
- Erasure — delete your account and data from Settings. This cannot be undone.
- Erase device notes only — keep your cloud data and erase what is held on this device.
- Withdraw analytics consent — at any time in Settings. Nothing is restricted if you do.
- Turn off notifications — at any time. There is at most one notification a day.
For rectification, restriction, objection, or any request you cannot complete in the app, write to [email protected]. We verify that the request comes from the person concerned and respond as required by law. You may also lodge a complaint with your local supervisory authority.
8. Children
The app is not directed to children. It is not designed for people under 13, and we do not knowingly collect their information.
9. Changes to this policy
When this policy changes we update the date at the top of this page. If a change means we begin collecting something new, we will tell you in the app.
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