Been fasting every day for the past five years. At the beginning of this year I started working out again, so I wanted to become more disciplined in my fasting. For me personally, LIFEFastingTimerTracker is great for that, and I can see how it would help others push past their goals (as they see they only have an hour left to go). But the health features are lacking to almost non-existent.
It reflects at which point the body goes into ketosis, and heavy ketosis, but lacks any relevant data input to do any real calculations. The ability to indicate which type of fasting a person is doing would make a difference (ie. water fast, liquid fast, or dry fast). The ability to add a meal data point (a simple total calories eaten) could eventually give way to doing real calculations (maybe even eventually using the body fat percentage, bone density, activity data of Apple’s health app). The ability to automatically update the body weight using the data of the health app would be beneficial, as well as exporting any relevant health data to the health app / HealthKit.
LIFEFastingTimerTracker has much potential, but for now it barely goes beyond being a basic fasting time tracker.