Your voice stays on your device.

Hanasu is a speaking practice app for Japanese grammar. This policy describes exactly what information the app uses, where it stays, and what we never do with it.

Effective date: March 21, 2026

Voice audio

Hanasu uses your device's microphone to record your spoken responses during grammar drills. All speech recognition is processed locally on your device using Apple's on-device speech recognition framework. Voice audio is never sent to our servers.

Progress data

The app stores your practice progress, mastery scores, and completed drills on your device only, using Apple's UserDefaults. This data never leaves your device and is not accessible to us.

Grammar points practiced and mastery scores
Completed scenarios and session history
Your selected JLPT level and app preferences

No account required

Hanasu does not require you to create an account or sign in to use the app. All core features — including all free N5 and N4 content — are available without any registration.

Sign in with Apple (purchase restoration only)

Sign in with Apple is offered solely as a way to restore your Hanasu Pro purchase on a new device. We do not store your Apple ID, name, or email address. No personal data is transmitted to us during the Sign in with Apple flow. Apple handles the purchase verification entirely.

Third-party services

Hanasu does not include any third-party analytics SDKs, advertising networks, or crash reporting services that collect personal data. There are no tracking pixels, fingerprinting scripts, or behavioral profiling tools in the app.

Data sharing and sale

We do not sell your data. We do not share your data with third parties. There is no data to share — everything stays on your device.

Deleting your data

To remove all locally stored data, delete Hanasu from your device. Reinstalling the app starts fresh. If your device is set up to restore app data from iCloud Backup, that backup is managed by Apple and governed by Apple's privacy policy.

Policy updates

If our data practices change, this page will be updated before any new behavior is shipped. The effective date at the top of this page reflects when it was last revised.

Contact

Questions about this policy? Email us at privacy@featuredeploy.dev.