Shusuan Privacy Policy

1. Scope

This policy describes on-device calculations, saved records and result copying in the current version of Shusuan. No registration is required. The current app does not offer ads, in-app purchases, subscriptions or public user posts.

2. Information processed on your device

Depending on the tool, you may enter dates and times of birth, a gender parameter, names, manually entered coordinates and time zones, building directions, questions, notes and other calculation parameters. These are used to calculate results on your device. Manually entering coordinates does not grant access to your device location; the current version has no automatic location feature.

When you choose to save, the app stores a result snapshot, calculation inputs, save time, title and notes locally. Question text is excluded by default and retained only if you explicitly choose to include it. Names, birth parameters and location inputs that form part of a calculation snapshot are retained with that saved snapshot. Display theme and reduced-motion preferences are also stored locally.

3. Transfers and third parties

The current application code does not upload calculation inputs or records to an operator server and has no advertising or behavioral-tracking SDK integration. Core calculations and bundled images work offline.

If you open an external reference link, you visit a third-party website. That site may process your IP address and browser information under its own privacy policy. App Store, TestFlight, system diagnostics and device backup are Apple services governed by the relevant Apple settings and terms.

This privacy and support website is hosted by Cloudflare. When you visit it, Cloudflare processes necessary network information such as your IP address, requested paths and browser information to deliver pages and protect the service. See the Cloudflare Privacy Policy. This website has no advertising or behavioral analytics integration. Visiting it does not upload calculation inputs or local app records.

4. Clipboard

The app writes result text to the system clipboard only when you select a copy action. This text may include calculation inputs or the current question. Copying a saved record uses that record's snapshot. If the system refuses the write, the same text is displayed for manual selection. Copying a question does not save it as an app record. System clipboard settings, Universal Clipboard and apps you paste into may affect the copied text.

5. Retention, deletion and backup

Local records remain until you delete them from Records or the system removes the app's data. Deleting the app normally removes local app data; offloading the app may retain it. System backups may retain copies depending on your device and Apple service settings. Shusuan does not provide an operator-managed cloud backup or cross-device synchronization service.

The app uses local storage and does not promise additional application-level database encryption. Protect your device credentials. The operator cannot remotely read, restore or delete these local records. Manage any copies you have pasted or backed up in their respective locations.

6. Support email

If you email support, we receive the email address, message and attachments you choose to send. We use them to respond, provide support and meet necessary obligations. Email is handled through the email service provider. Do not send unnecessary identity documents, real birth details or other people's private information. We retain support content only as long as needed to handle the request and meet necessary obligations, then delete or de-identify it. Contact support to request access or deletion.

7. Children

Shusuan is not specifically directed at children and does not ask minors to upload personal information to the operator. The store age rating follows the final content questionnaire. Do not enter or share another person's sensitive details without appropriate authorization.

8. Changes and contact

We will update this policy and store disclosures when our data practices change, and provide notice or obtain authorization where required. Privacy questions: qfyalenkz12@gmail.com.