Fitness 4 Fun — Human vs. Robot Challenge
The Human vs. Robot Challenge is made by Fitness 4 Fun, a brand of Global Tribrush LLC (Illinois, USA). Questions about this policy can be sent to info@fitness4fun.com or through fitness4fun.com.
AI Camera Mode is optional. If you choose it, your browser will ask for permission to use the camera. The game then uses on-device body-tracking software (running inside your web browser) to recognise exercise movements and count your reps.
To make the game work between sessions, it saves a small amount of information in your browser's local storage. This stays on your device and is not sent anywhere:
You can erase the round history with "Reset what the robots know" on the setup screen, your progress with "Reset my progress" on the My progress screen, or everything by clearing site data in your browser. Leaderboard names are only ever shown on the device they were typed on.
The game is designed for families and classrooms, including children under 13. Because of that, it is built so that no personal information is collected from anyone: there are no accounts, no sign-ups, no advertising, and no tracking of individuals. The only information that leaves the device is anonymous usage counts (see “Usage counts” below), which contain no names, images or camera data. The name entered for a leaderboard score stays on that device. We encourage parents and teachers to supervise play and to choose tap counting if they prefer not to use a camera.
The game is served as a static website. Like any website, the hosting provider may keep standard server logs (such as the IP address and browser type of a visitor) for security and operations. Fitness 4 Fun does not use these logs to identify or track players.
You can switch on Voice commands on the setup screen to talk to the robot instead of tapping — for example “next round” to skip the rest timer, or “pause”. This is off by default. When it is on, the game uses the speech recognition built into your browser while a challenge is running, and turns the microphone off when the challenge ends. On most phones and computers that built-in recognition works by sending short clips of microphone audio to the browser maker's speech service (Google for Chrome, Apple for Safari) to work out the words; Fitness 4 Fun never receives, stores or records any audio, and the recognised words are used only to trigger the command and are not kept. If you would rather the microphone never be used, leave Voice commands off — every command has a button.
To improve the game we use Umami, a privacy-focused analytics service, to count how the game is used: page visits, and game events such as a challenge starting, a round ending (which robot, which exercise, how many reps, win or loss) and whether the camera or tap counting was used. This data is anonymous and aggregated — it contains no names, no leaderboard entries, no camera images or body-tracking data, and no precise location. Umami does not use cookies and does not store IP addresses; a visitor is only counted, not identified or followed across other websites. The counts are used solely to understand which robots, exercises and features people use, so that Fitness 4 Fun can make the game better.
The game sets no cookies and uses no advertising, cross-site tracking or profiling. The only third-party service that receives any data is the cookie-free usage counter described above.
Body tracking uses the open-source MediaPipe Pose library from Google, included with the game under the Apache 2.0 licence and run locally in the browser. Using it does not send any data to Google. Spoken robot voices use the text-to-speech engine built into your phone or browser.
If this policy changes, the updated version will be posted here with a new date.