SumMates · 同心账簿

Privacy Policy

Last updated: September 13, 2026

SumMates is local-first. Personal ledgers, private entries, local preferences and device identity mappings remain on your device. Shared content is placed in Apple iCloud CloudKit only when you create or join a family or trip ledger, and is available only to invited participants.

Data and permissions

Purchases

Apple App Store processes payment and StoreKit verifies access. The developer does not receive your card number. Subscription expiry does not delete existing entries.

No tracking

The app has no third-party advertising or behavioral tracking SDK, does not sell data, and does not create marketing profiles. This website uses no forms, analytics scripts or cookies.

Your controls and retention

You can delete entries, export a JSON backup or clear local data under Settings → Data & Privacy. Clearing local data does not delete iCloud shared copies; an owner can stop sharing through Apple iCloud sharing controls. Local data remains until you delete the app, entries or all local data; iCloud retention is managed through your Apple account and Apple services.

Children and changes

The app is not directed to children for marketing and does not actively collect age information. Material policy changes will update the date on this page and, when appropriate, be noted in the app or App Store release notes.

Contact

Email kismet220@163.com. The publisher is an individual developer; the legal name is identified by the Seller information on the App Store product page.