Privacy Policy
This policy explains how Chordfier for Android ("Chordfier", "we", or "the app") handles information when you recognize chords, analyze recordings, sign in, or synchronize a library.
At a glance
- You can use the core app without creating an account.
- Google sign-in is optional and is required only when you choose Cloud Sync.
- All Chordfier features, including Cloud Sync, are included without payment.
- Product analytics are optional and off by default.
- Chordfier does not show advertising or offer in-app purchases.
- Chordfier does not sell personal information.
Information processed on your device
Microphone input, audio recordings, enhanced playback copies, detected chords, beat and tempo analysis, tuning measurements, and other musical results are processed locally. The app stores recordings and its local library in private app storage. Android backup is disabled for Chordfier data.
Information collected when you choose online features
If you sign in with Google, Firebase Authentication processes your Google account identifier, email address, display name, and profile-photo reference so Chordfier can show the signed-in account and keep each library isolated.
If you enable Cloud Sync, Firebase stores portable library information associated with your account. This can include session and folder identifiers, titles, timestamps, duration, chord progressions and events, musical key, tempo, meter, analysis status, and synchronization metadata. Cloud Sync does not include raw audio or device-local file paths.
If you explicitly enable product analytics, Firebase Analytics receives limited events about actions such as sign-in results, synchronization outcomes, completed or failed analyses, and library-item opens. It also processes an app-instance identifier, device and app information, and an approximate region derived from network information. Precise location is not collected by Chordfier. Events use closed categories and count ranges rather than raw audio, chord sequences, song titles, email addresses, names, or Firebase user IDs. Analytics can be turned off again in the app.
Firebase App Check, Google Play Integrity, and related platform services may process app, device, network, license, and integrity information or tokens to protect accounts and backend access from abuse.
How information is used
- Provide sign-in, library synchronization, and account-deletion features.
- Keep one user's library separated from another user's library.
- Protect the app and its backend against fraud and abuse.
- Measure product reliability and improve Chordfier only when analytics consent is enabled.
- Comply with legal, accounting, security, and platform obligations.
Service providers and sharing
Chordfier uses Google Firebase for authentication, Cloud Sync, app integrity, and optional analytics, and Google Play for distribution and platform integrity. These providers process information on our behalf or as independent platform providers under their own terms. We do not sell personal information or share raw recordings with these services.
Retention and deletion
Local recordings and library data remain on the device until you delete the relevant item, clear app data, uninstall the app, or delete the signed-in account as described below. Synced library data remains while the account is active and is deleted through the account-deletion flow. Limited security logs and backup copies may be retained by service providers for fraud prevention, legal, dispute, or platform requirements.
You can delete individual sessions and folders without deleting your account. You can also delete the complete Chordfier account from inside the app. See the account deletion instructions for the exact steps and scope.
Security
Information transmitted to supported online services is encrypted in transit. Access to synchronized library data is restricted by authenticated account ownership and backend security rules. No security measure can guarantee absolute protection, so Chordfier minimizes collection and keeps audio processing local by design.
Children
Chordfier is intended for people aged 13 and older. It is not directed to children under 13 and does not knowingly collect their personal information.
International processing
Online providers may process information in countries other than the country where you live. Their contractual, technical, and legal safeguards apply to those transfers.
Changes to this policy
We may update this policy when Chordfier's features or legal obligations change. The effective date at the top of this page identifies the current version. Material changes will be reflected here before the affected behavior is released.
Contact
For privacy questions, use the public support contact listed under Developer contact on Chordfier's Google Play store page. This avoids publishing a developer's private personal address on this site.