Privacy policy

What FitMaxx is

FitMaxx is a personal tracker for fasting, food, weight, peptide protocols and Apple Health data. It is built by one person for a handful of people. There are no ads, no analytics vendors and no data brokers.

What is stored

Your account: the anonymous identifier Apple issues when you sign in, and the name and email address you choose to share with the app. Your date of birth, if you set it or let a lab report fill it in; it is used only to work out your age on the day of a blood draw.

What you log: meals and foods, fasts, weigh-ins and progress photos, peptide protocols and doses, workouts, blood work and lab PDFs, and the goals you set.

What Apple Health provides, once you connect it: weight, body fat, lean mass, sleep, step totals, workouts, daily totals of food logged in other apps, resting heart rate, heart rate variability and VO₂ max.

All of it is stored on a server the developer runs, so that it is there when you reinstall the app or open it on another phone. Photos and PDFs are stored in a private bucket that only the server can read.

Apple Health

Health data is read only after you grant permission, and only the types listed above. Weights, workouts and meals you log in FitMaxx are written back to Health so the Health app stays your record.

Health data is never used for advertising or marketing, never sold, and never shared with anyone except as described in "Who else sees it".

Who else sees it

When you log a meal from a photo, that photo is sent to Anthropic, the company behind the Claude model, to estimate what is on the plate. When you read in a lab report, the PDF is sent the same way so its results can be transcribed. Once a week the coach sends the figures the app shows you - the insight sentences, lift records, your latest lab panel, your goals, the names of your protocols and a summary of the last seven days - never a photo, a raw Apple Health sample or a dose amount. Nothing else about you goes with any of these. Anthropic does not train on this data.

When you scan a barcode, the code alone is looked up in Open Food Facts, a public database. When you search for a food, the words you typed are sent to Open Food Facts and to USDA FoodData Central, a public database run by the US Department of Agriculture. No account details go with either.

The developer can see what is stored, in order to run the service, fix problems and answer questions; that access is never used for anything else.

That is the whole list. Nothing else leaves the server.

Deleting your data

Settings has a "Delete my account" button. It removes every record, photo and PDF tied to your account from the server at once. Apple Health keeps whatever it already has, because that is yours and lives on your phone.

Signing out keeps your data on the server for when you sign back in.

Contact

Questions about any of this: danoph@gmail.com.