Privacy policy
Effective 17 August 2026
Your measurements and progress stay on your device. RevenueCat and Apple only handle subscription status and payment.
Measurements and progress
Massy calculates adult BMI, True Trend, weekly recaps, comparisons, and goal estimates from measurements you enter. Unit preference, height, weight, dates, BMI results, check-ins, goals, reminders, milestones, and generated insights remain in local app storage and are not transmitted by Massy.
Your controls
Settings lets you export check-ins as CSV, share a PDF report, delete individual check-ins, or delete every local check-in, goal, reminder, and milestone. You choose any destination used by the iOS share sheet. Removing Massy also clears local app data, subject to backups controlled by iOS.
Local reminders
If you enable check-in reminders, iOS asks for notification permission and schedules them locally. Massy does not request a push token, register for remote notifications, or use a notification server.
Subscriptions
Massy requires an auto-renewable subscription. RevenueCat helps present products, verify entitlement status, and restore purchases. It may process an anonymous app user identifier, product and entitlement status, and App Store transaction or receipt information. Apple processes payment, renewal, trial eligibility, and cancellation. Massy does not receive payment-card details, and RevenueCat does not receive your measurements or progress.
No advertising, tracking, or Apple Health
Massy contains no advertising SDK and does not use data for tracking. It does not request App Tracking Transparency permission or use Apple Health. There is no Massy account, analytics SDK, or remote backend.
Health information
BMI and progress insights are general references for adults 20 and older, not medical diagnoses, predictions, or treatment advice.
Contact and changes
Questions about privacy can be sent to rros00+massy@gmail.com. We may update this policy when Massy’s services change. The effective date identifies the current version.