A recent study examined privacy policies of the top health and fitness apps to determine which ones track the most data.
It appears that Supplement Timing has updated its article. A spokesperson from Maven reached out to both them and me, saying the study contained inaccuracies. Here’s what Maven said:
- There are 8 fields classified as “default” — the number for Maven should be 4.
- There are only 4 “default” fields consumers need to use the Maven app — name, email, US state, and device information. Address, age, date of birth, gender, and phone number are not collected by default.
- There are 15 fields classified as “optional” — the number for Maven should be 11. Maven does not ask for calorie & food intake, sleep schedule, hobbies / interests, or workout details.
Health & Fitness Tracking
Supplement Timing found 27 data types and gave the apps 2 points for each type they track by default and 1 point for types that require user permission. Here are the key findings:
- The app that tracks the most data is a medical app called Maven, which collects 23 types of data and has a score of 31 points.
- Fitbit is the fourth hungriest data-tracker in our study, with 27 points.
- Nutrition & Weight Loss apps track 15 of the 27 data types, and this is the top category because they are most likely to track that data by default.
- The least data-intrusive app is a mental health tool, WorryWatch, which only uses the device data it gets from the App Store.
As one example, Maven is a women’s health and fertility app and collects 23/27 data types, and tracks eight of them by default. Another app called PlateJoy is the most invasive app in the Nutrition & Weight Loss category. A third app called FitBit is the most invasive step counter app.
The full results can be found on Supplement Timing’s website.