JiniSynth — Privacy Policy
Last updated: 18 August 2026
JiniSynth is a SoundFont synthesizer for Android, published by Luacua. This
policy explains what the app does with data. It is short because the app does
very little with data.
JiniSynth does not collect, transmit or share any personal
information. There is no account, no sign-in, and no server that
belongs to us. Nothing you do in the app is reported to anyone.
What stays on your device
Your set lists, sounds, levels, transpose settings, audio and MIDI preferences
are written to a single file in the app's private storage on your phone
(jinisynth.json). We cannot read it. It is removed when you
uninstall the app.
Permissions, and why each one exists
- Bluetooth — to find and connect to Bluetooth LE MIDI
keyboards. The app scans only for MIDI devices, and on Android 12 and
later the scan is declared as never being used to derive location.
- Location (Android 11 and older only) — older versions
of Android would not allow any Bluetooth LE scan without this
permission, so it is requested there and nowhere else. JiniSynth does not
use, store or transmit your location on any version of Android.
- Internet and network state — to download SoundFont files
that you choose to add. Nothing is uploaded, and no request carries
information about you.
- Notifications and foreground service — to keep the audio
engine and the MIDI connection alive with the screen off, which is what
makes the app usable on stage. The notification is how Android requires
that to be shown.
No advertising, no analytics
The app contains no advertising, no analytics, no crash reporting and no
third-party tracking libraries of any kind.
Google Play
If you install JiniSynth from Google Play, or make a purchase in it, Google
processes that transaction under
Google's own privacy policy.
We receive only the aggregate, anonymous sales and installation statistics that
Google Play shows every developer. We never see your payment details.
Children
JiniSynth is a musical instrument intended for a general audience. It is not
directed at children under 13, and it collects no data from anyone.
Changes
If this policy changes, the new version will be posted at this address with a
new date at the top.
Contact
Questions about this policy: contact@luacua.com