Nistis.
A fasting timer. That’s it.

Most fasting apps have turned into subscription coaching platforms. Nistis is just the timer — done properly.

The timer is free — start, end, and fix a forgotten fast in two taps. Your data stays on your device and exports any time.

Coming soon to the App Store

Want more? Nistis Pro — Apple Watch, widgets, sync — is $29.99 once, yours forever. Others charge $69.99 every year.

Free. All of it, forever.

  • Nistis timer screen: a progress ring, elapsed time of 13:05:04, goal presets for 16:8, 18:6, 20:4, OMAD, and 5:2, and an End Fast button.
    One ring. Elapsed, remaining, or percent — tap to switch.
  • History screen with a month calendar marking days where the goal was met, repaired, or logged, and a day's fast entry with a note.
    A calendar you can trust. Nothing hidden, nothing guessed.
  • Fast editor sheet for adjusting or backfilling a fast's start and end time.
    Forgot to log a fast? Fix it in two taps — free, unlimited, always.

With Nistis Pro

  • iPhone Lock Screen showing a Live Activity with the running fast.
    Your fast on the Lock Screen. Pro
  • Home Screen widgets showing fasting progress.
    Home Screen widgets, every size. Pro
  • Apple Watch app showing the fasting timer.
    Start and end from your wrist. Pro