CHORDFALL

Privacy Policy

Last updated: July 2026

The short version: Chordfall listens to your guitar through the microphone to run the game, but that audio is processed live on your device and is never recorded, stored, or sent anywhere. We collect anonymous usage stats (like which modes get played) to improve the game. No accounts, no personal data, nothing that identifies you. Your calibration and progress stay on your device.

This policy explains what Chordfall ("the app", "we") does with information when you play, on both the mobile app and the web version at chordfall.vercel.app.

Microphone

Chordfall uses your device's microphone to detect the chords you play on a real guitar, which is the whole point of the game. The audio is analyzed in real time, on your device, to recognize which chord was strummed. It is not recorded to a file, not saved, and not transmitted to us or anyone else. Nothing leaves your device.

Information stored on your device

The app saves a few things locally on your device (in the app's own storage) so it works well for you:

Calibration data: a mathematical fingerprint of how your chords sound, so recognition is more accurate. This is a set of numbers, not audio.
Your progress and stats: high scores, accuracy, streaks, and per-chord performance.
Settings: such as sound on/off and expert mode.

This information never leaves your device. You can erase all of it at any time by clearing the app's data or uninstalling the app.

Analytics

To understand how Chordfall is used and make it better, we collect anonymous, aggregated usage events using a privacy-focused analytics service (PostHog). For example: the app was opened, calibration was completed or skipped, which game mode was chosen, or a set finished.

This data is:

Anonymous: tied only to a random per-install identifier, never to your name, email, or any account (there are no accounts).
Non-personal: we do not collect your audio, contacts, location, or any personal information.
Not shared or sold to advertisers or third parties.
On the web, it respects your browser's "Do Not Track" setting.

What we do not do

We do not create accounts or ask you to log in.
We do not sell, rent, or share your data with third parties.
We do not show ads.
We do not access your contacts, location, photos, or files.

Children

Chordfall is a general-audience music game and is not directed at children under 13. It does not knowingly collect any personal information from anyone, including children.

Changes to this policy

If this policy changes, the "Last updated" date above will change. Material changes will be reflected here.

Contact

Questions about this policy? Email amikovid@gmail.com.