Last Updated: September 14, 2026
ChestMaxx grades your chest from one front-facing photo and builds a training plan around the weakest area. That photo is sent, encrypted in transit, to Google's Gemini API through our Cloudflare Worker proxy so the model can score it. Meal photos take the same route so we can estimate their calories and macros. We ask for your explicit consent in the app before the first chest photo is sent, and separately before the first meal photo. No photo is stored on any server we operate. The rep counter runs entirely on your phone and no camera frames leave it. Everything else (your profile, scores, plan, sessions and meals) lives on your device. There are no accounts. We use RevenueCat for subscriptions and PostHog for product analytics, crash reports and session recordings; in those recordings the camera and every photo are masked before capture, so they never contain your chest or meal photos. We do not sell, share or monetize your personal data.
ChestMaxx is operated by Aditya Bhattacharyya, an individual developer based in India.
Privacy and direct contact: [email protected]
In this Privacy Policy, "we," "us," and "our" refer to ChestMaxx and its developer.
Unless otherwise stated, all data below is stored locally on your device in the app's private storage.
Numeric profile fields (sex, age, height, weight, goal) are sent alongside each chest-scan request to our Cloudflare Worker (see Section 4) so the model can grade with that context. Your name is never sent.