inApp
Rating: Intermittent fasting

Zero: Fasting & Food Tracker

gamed rating

An intermittent fasting timer with a polished fat-burning phase visualization, but the free version's functionality is cut to a bare minimum.

38real score
4.8store star
445,291ratings
About the rating

Store average of 4.82 versus text average of 1.88 with pct5 at just 11%, a huge gap. Real reviews are overwhelmingly one-star: broken weight calculation, aggressive paywall from the first screen, data lost after an update.

Strengths

What users love

  • A 'flame' animation during peak fat-burning phase genuinely motivates users to keep going. People who lost 20-30 pounds credit this visual cue as a key driver.
Weak spots

What users hate

  • The target weight algorithm has a serious bug: it substitutes someone else's parameters in place of the ones you entered. The app gives no warning about maximum safe fasting duration
  • Which is a risk for vulnerable users.

Who it is for

People willing to pay for a subscription from day one who want motivating phase visualization.

Screenshots