Commander Tower

Privacy policy

Last updated: 11 October 2026

Commander Tower is a life counter and group tracker for the Commander format, published by an independent developer. This page explains what data the app handles and why. Contact: commander.tower.app@gmail.com.

Using the app without an account

Quick games work without an account and without a connection. Their data (players, life totals, settings) stays on your device and is not sent to us.

Data we store when you create an account

• Account: your email address and a password (stored only in hashed form).
• Profile: the display name and avatar you choose.
• Content you create: groups and their members, decks and their card lists, saved games and their results, your card collection, wishlists and trades.

We use this data only to provide the app's features: syncing your content, showing group history and statistics, and letting you trade cards with other players. We do not sell it and we do not use it for advertising.

What other players can see

• Members of a group you join see your display name, avatar, the decks you play there and the games' results.
• If you turn on "Share with my groups", members of your groups see the cards you offer for trade and the cards you are looking for.
• While a trade is open, the other party can see the cards in your collection.
• Global commander rankings are built from saved games in aggregate form, without names or other personal data.

Service providers

• Supabase hosts the database and handles sign-in. Your account data and content are stored on its servers on our behalf.
• Scryfall provides card data and images. When you search for cards or view card images, your device sends requests to Scryfall (card names or identifiers, and, as with any internet request, your IP address). No account data is sent.
• Google AdMob may show a banner advertisement on the home screen. If advertising is active, Google may collect device identifiers and usage data to show and measure ads, as described in Google's policy. Where required, the app asks for your consent first. A one-time support purchase removes the ads.
• Google Play processes the optional support purchase. We never receive your payment details.

Permissions

The camera is used only to scan invitation QR codes, when you choose to. Images are processed on the device and are not stored or uploaded.

Retention and deletion

Your data is kept while your account exists. You can delete your account and its data at any time from the app or by email: see how to delete your account.

Your rights

You can ask to access, correct, export or delete your personal data, or object to its processing, by writing to commander.tower.app@gmail.com. If you are in the European Union you can also lodge a complaint with your data protection authority.

Children

The app is not directed at children under 13 and we do not knowingly collect their data.

Changes

If this policy changes, the new version will be published on this page with its date.

Fan content

Commander Tower is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.