Privacy Policy
Your data, briefly.
Last updated July 13, 2026. 4D FIT is built to need as little of your data as possible — here’s exactly what we and our partners collect.
The short version
4D FIT has no accounts, no sign-in, and no server of ours to talk to. Your progress (best score, current level, settings, and whether you’ve purchased Remove Ads) is stored only on your device and never sent to us.
The data that leaves your device goes to three third-party services: Google AdMob (ads) and RevenueCat (purchases, which in turn relies on Apple’s and Google’s own store systems), plus anonymous usage analytics we collect through PostHog to understand how the game is played. Details below.
Information stored on your device
The game saves your best score, current level, audio/haptics settings, and your Remove Ads purchase status in local storage on your device (browser local storage on web, or the equivalent native preferences store on iOS/Android). This data is not transmitted to us and is deleted if you clear your browser data or uninstall the app.
Advertising (Google AdMob)
On iOS and Android, 4D FIT shows interstitial and rewarded interstitial ads through Google AdMob unless you’ve purchased Remove Ads. AdMob may collect device and advertising identifiers, approximate location, and ad interaction data to serve, measure, and (where you allow it) personalize ads. This data is collected and processed by Google, not by us — see Google’s Privacy Policy for details.
You can limit ad personalization through your device’s privacy settings (App Tracking Transparency on iOS, Ads settings on Android). The web build shows no ads.
In-app purchases (RevenueCat, Apple, Google)
The one-time Remove Ads purchase is processed entirely by the Apple App Store or Google Play Store — we never see or handle your payment details. We use RevenueCat to check and restore your purchase entitlement across sessions, which involves sending your anonymous purchase/transaction status (not your name, card, or billing address) to RevenueCat’s servers. See RevenueCat’s Privacy Policy for how they handle that data.
Analytics (PostHog)
The game and this website send anonymous usage analytics to PostHog (hosted in the US) so we can understand how 4D FIT is played and keep it working well: events like app launches, runs started, levels reached, scores, ads shown, purchases completed, and crash/error reports, along with basic device information (platform, browser, screen size). These events are not tied to your name, email, or any account — there are none — and we don’t use them to build advertising profiles. See PostHog’s Privacy Policy for how they handle data.
What we don't do
We don’t require an account, don’t collect your name, email, or contact details unless you email us directly, don’t use analytics to build advertising profiles of you, and don’t sell any data to anyone.
Children's privacy
4D FIT is not directed at children under 13 and we do not knowingly collect personal information from children. If you believe a child has provided us information (for example, by emailing us), contact us and we’ll delete it.
Changes to this policy
If this policy changes, we’ll update the date below. Continued use of the app after a change means you accept the update.