Rival Brains — Privacy Policy

Effective date: November 6, 2026

Rival Brains is a two-player game played on one phone, published by Proliferaite LLC. It has no accounts, no sign-in, and no servers of its own.

What stays on your device (everything you create)

Player names, emoji, avatar photos, scores, head-to-head records, and settings are stored only on your device. They are never uploaded, transmitted, or shared. Avatar photos taken with the camera or chosen from your gallery are copied into the app's private storage on the device and nowhere else. Uninstalling the app permanently deletes all of this data.

What is collected automatically (diagnostics)

To find and fix crashes, the app uses Google Firebase Crashlytics and Firebase Analytics. When the app runs, Google's SDKs may collect:

• Crash logs and stack traces
• Diagnostics: device model, operating system version, app version
• Anonymized identifiers (such as a Firebase installation ID) used to count installs and de-duplicate crash reports

This information is used solely to keep the app working and is processed by Google LLC on our behalf. It is encrypted in transit. Crash data is retained by Google for a limited period (approximately 90 days) and then deleted. We do not use this data for advertising and we do not sell it.

Advertising

Rival Brains has one kind of ad, and only when you ask for it: an optional short video you may choose to watch to unlock the premium duels for 24 hours. There are no banner ads and no ads that interrupt a game, and Riddle Rumble, Quick Maths and Echo never need one. Ads are muted — the app silences them before any ad is requested.

Ads are served by Google AdMob, which may process device information and, with your consent where required, an advertising identifier in order to serve and measure ads. In the European Economic Area, the UK and Switzerland you will be asked for consent before any ad is requested, and you can decline; declining never blocks the free duels or the purchase below.

On iOS, Rival Brains does not show the App Tracking Transparency prompt and does not request the advertising identifier (IDFA). Ads on iOS are therefore non-personalized, and nothing about you is linked across apps or websites owned by other companies.

You can reset or delete your advertising identifier at any time in your device settings. For details on Google's practices see How Google uses information from sites or apps that use its services.

Purchases

Rival Brains offers one optional in-app purchase, Rival Unlimited: a single payment, not a subscription, that unlocks every duel permanently, so there is no reason to watch an ad. The purchase is handled entirely by Google Play or Apple's App Store; we never see your name, card or other payment details, only the store's confirmation that the purchase exists. A record that you own it is kept by the store (so you can restore it on a new device) and on your device. The price, refunds and your cancellation rights are set out in the Rival Brains Terms of Service.

Children

Rival Brains is suitable for a general audience. We do not knowingly collect personal information from anyone, including children. Player names, photos and scores never leave the device; the only data that reaches third parties is the anonymous diagnostics, the ad-serving data and the store purchase record described above.

Data deletion

Everything you create in the app lives on your device: uninstalling the app deletes it. Diagnostic data held by Google expires automatically. For any request or question, contact us at the address below.

Changes

We will post any changes to this policy at this URL and update the effective date above.