Fastitude app icon

Your fast.
Your rhythm.

Fastitude helps you build a fasting routine around your life — not the other way around.

Private by design. No account. No cloud. No ads.

Download on the App Store
Fastitude ring showing all five metabolic stages, in dark and minimalist mode

Fasting without the noise.

Everything you need to stay focused. Nothing you don't.

Know exactly where you are

Your fasting time is always clear. No confusing stages or unnecessary noise.

Always with you

See your progress from your Lock Screen, Dynamic Island, or Home Screen.

Fast around your real life

Choose your own fasting windows or let Fastitude help you build a rhythm.

See patterns, not just numbers

Understand how your fasting habits change over time.

One fast at a time.

Start when you're ready. Fastitude quietly keeps track of the rest.

Fastitude's fasting ring in guided mode, mid-fast, showing every metabolic stage reached so far and context for the current stage

Built around your life.

There isn't one perfect fasting schedule. Your routine should work with your life.

Step for choosing a fasting pace: 14:10, 16:8, 18:6, 22:2, or custom

Choose your rhythm

Tell Fastitude what your day looks like.

Step for choosing a schedule, with a window recommended for your profile

Get a starting point

Receive a schedule based on your routine.

Step for choosing guided or minimalist mode

Make it yours

Use guidance when you need it. Keep things simple when you don't.

Progress you can actually understand.

Every fast is recorded automatically, helping you see your consistency and patterns over time.

Weekly progress chart, with total fasts, goals met, average and longest fast

Your week, at a glance

See exactly when you fasted, not just how long.

Achievement badges unlocked as you stay consistent

Small wins, marked

Milestones that show up as you stay consistent.

Your data stays yours.

No account. No cloud. No ads.

Your fasting history stays on your device.

Start with your next fast.

Simple, private, and built around your life.

Download on the App Store

No account required.

Intermittent fasting isn't for everyone. Talk to a healthcare professional before starting if you're pregnant or breastfeeding, take medication for diabetes, have a history of disordered eating, or are under 18. Fastitude is a tracking tool, not medical advice.