Privacy policy

Applies to Tabifuda Android (com.stackworksdev.tabiphrase), operated by StackWorks. Updated October 5, 2026.

Local records

Personal phrases, translations, favorites, recent inputs, drafts, and settings are stored in this app's private area on your device. We do not upload them to a developer server. No account or cloud sync is offered, and ordinary records are excluded from Android automatic backup.

Delete phrases in the app and remove favorites by unchecking their stars. Clearing app storage in Android Settings or uninstalling removes all local records. The separate public sample exists in memory and is discarded when it ends.

Translation, rewriting, and speech

Optional translation uses downloaded Google ML Kit on-device models. Preparation requires an explicit action and Wi-Fi. Optional Japanese rewriting uses an on-device model on supported devices. Text inference does not send your phrases to the developer or a translation server.

SDKs may send encrypted information to Google for model delivery, configuration, and quality: device/app metadata, configured languages, task and input/output size, performance/errors, usage events, and installation-related identifiers. This diagnostic traffic is separate from on-device text processing. See ML Kit's disclosure and Google's privacy policy.

We select only installed offline speech voices. A speech engine's own diagnostics follow its provider's settings and policies.

Purchases and diagnostics

Google Play processes Plus purchases and restoration. The app keeps verified purchase status locally; we do not receive card numbers. Billing 9.1 may send connection/purchase diagnostics, app/SDK versions, package metadata, and random session identifiers to Google. Its session identifier is not a permanent device ID and is separate from ML Kit installation identifiers. SDK diagnostics may occur without a purchase or restore action.

Other information

The app has no ads, advertising ID, location/contact access, Health Connect, microphone recording, or photo collection. Personal medical or allergy wording is kept locally like any other phrase.

Support and deletion enquiries

Contact contact@stack-works.dev. We cannot directly access local phrases or Google's SDK diagnostics. Google-side purchase or diagnostic deletion may require Google's own procedures. Email content is used to answer enquiries. Please avoid including unnecessary personal or medical details.