Crypto Monitor privacy policy

Last updated: 6 September 2026

Crypto Monitor is a free Android app that shows cryptocurrency prices from public exchange APIs and raises alarms when a price crosses a line you set. This page explains what the app does with data. The short version: the app has no account system, no analytics, no advertising and no server of its own. Everything you enter stays on your phone.

What the app stores on your device

The following is kept in the app’s private storage on your phone only. It is never uploaded anywhere, and it is deleted when you uninstall the app.

• The pairs you watch and the exchange each one comes from.
• Alarms you set and the log of alarms that fired.
• Recent prices and today’s candles, kept so the chart and the change since open work offline.
• Your settings (refresh intervals, sounds, voice announcements, background mode, the exchange-list update URL).

You can clear all of it at any time from Android’s Settings > Apps > Crypto Monitor > Storage > Clear storage.

Network requests the app makes

The app talks directly to two kinds of servers. As with any internet request, those servers can see your IP address and the time of the request.

1. Cryptocurrency exchanges. To fetch a price, the app calls the public, unauthenticated market-data endpoint of the exchange you chose (for example Binance, Kraken or Coinbase). The request contains only the trading pair symbols you asked for. No exchange account or API key is involved. Each exchange has its own privacy policy governing what it logs.
2. The exchange-list update. About twice a day the app checks a small JSON file on the app’s website (hosted on GitHub Pages) for an updated list of exchange endpoints. You can change or disable this in Settings > Exchange list.

The app does not contact any other server. It sends no crash reports, no usage statistics and no device identifiers.

Permissions and why they are needed

Permission	Why
Internet	Fetch prices from exchanges and the exchange-list update.
Notifications	Show price alarms and, if you opt in, a persistent price row.
Vibrate	Alarm feedback.
Run at start-up	Re-arm scheduled background refreshes after a reboot.
Foreground service (special use)	Live background mode: keeps checking prices at your chosen interval while the app is closed, with a visible notification.
Wake lock	Finish a refresh that started while the screen was off.
Ignore battery optimisations	Optional. Offered in Settings so Live mode is not stopped by the system on phones with aggressive battery management. The app works without it.

The app does not request location, contacts, camera, microphone, storage or any advertising identifier.

Voice announcements

Prices read aloud use the text-to-speech engine already installed on your phone (usually Google’s). The text is sent to that engine on the device. If the engine you chose synthesises speech in the cloud, its own privacy policy applies.

Children

The app is not directed at children and collects no personal data from anyone.

Changes to this policy

Any change will be published on this page and noted in the app’s release notes. Because the app collects nothing, changes are expected to be rare.

Contact

Questions about this policy: cryptomonitorapp@proton.me