How to choose an intermittent fasting app
A good fasting app keeps the timer simple, tells you the real price up front, screens for who shouldn't fast, and doesn't need an account you don't want. Use the checklist below on any app, including StepFast.
A checklist for choosing
| Question to ask | Why it matters |
|---|---|
| Is the basic timer free? | Some apps lock custom fasting windows behind a subscription. |
| What does it cost after any trial or discount? | Check the renewal price on the App Store page before you start. |
| Does it screen for who shouldn't fast? | Fasting isn't right for everyone, and good apps say so. |
| Does it need an account? | Some apps store data on a server, others only on your phone. |
| Can you turn off streaks and notifications? | Pressure to extend a fast isn't helpful. |
| Does it work with Apple Health? | Useful if you want steps and weight in one place. |
Where StepFast fits
StepFast is a walking-first weight tracker for iPhone, with a fasting timer as an option. It suits you if you want steps, weight and an optional fasting window in one simple app, with no account. It is not a calorie or food logger, it is iPhone only, and the interface is in English. The App Store listing shows which features are free and which are in the optional paid tier.
Other apps you may come across
Well-known fasting apps include Zero, Simple, Fastic, BodyFast and Life Fasting Tracker. Prices and features change, so compare each one's current App Store page using the checklist above.
Not medical advice. Fasting is not right for everyone. If you are under 18, pregnant or breastfeeding, have a history of disordered eating, or have a medical condition (especially diabetes or anything involving medication), talk to a doctor before fasting. Read the full safety page.