StepFast

Walk your number. Close the kitchen on time.

StepFast is an iPhone app for losing weight and then keeping it in a steady range. It brings together your daily steps from Apple Health, a quick morning weigh-in and an optional intermittent fasting window, and shows your day on one clear dial.

No account. No ads. No calorie counting. Your data stays on your phone.

Coming soon to the App Store

How it works

1. Walk

StepFast reads your daily steps from Apple Health, so steps from your iPhone and Apple Watch count on their own. You get a daily step target as a starting estimate, based on your height, weight, age and sex. You can also pick the hour your day ends, so late steps land on the right day.

Weigh in

Step on the scale each morning and log the number, or use a weight that is already in Apple Health, including one from a connected smart scale. Missed a day? You can add it later, up to 7 days back. Over time, your weigh-ins show how your steps and your weight move together.

Add an eating window (optional)

If you want to, add intermittent fasting with a 12:12, 14:10, 16:8 or 18:6 plan. The first number is the hours of fasting, the second is the hours of your eating window. Instead of a stopwatch to stare at, StepFast simply tells you "Kitchen is open" or "Kitchen is closed". StepFast never suggests a fast longer than 18 hours, and you can use the whole app with steps only.

Before suggesting any fasting, StepFast asks a few short safety questions and keeps fasting off where it may not be appropriate, such as during pregnancy.

Four zones, one dial

Each day sits in one of four step zones, adjusted for you. They are estimates, not promises. Bodies differ.

May rise: on steps like today's, your weight may start to creep up.
Almost there: you are close to your maintain zone. A short walk could get you there.
Maintain: today's steps are in the range StepFast estimates helps hold your weight steady.
Lose: today's steps are in the range StepFast estimates may support gradual loss, as part of your plan.

Four tabs

Today: your dial, today's steps, your weigh-in and what to do next.
Calculator: drag to any step count and see how many more minutes of walking would even out a short day.
Fast: your eating window, your fasting plan and a 7-day fasting history you can add to or edit.
Trends: weight, steps and fasting hours over time, so you can see the direction, not just one day.

Private by design

No account and no sign-up.
No ads and no analytics.
Your data stays on your iPhone. StepFast has no server that collects it.
StepFast reads steps and weight from Apple Health. It never writes anything back to Apple Health.
Don't want to connect Apple Health? You can enter your steps yourself.

Free and Premium

Free

The four-zone dial with a starting step estimate
Daily weigh-ins, BMI and estimated resting burn
Step calculator
Optional fasting timer with 12:12, 14:10, 16:8 and 18:6 plans

StepFast Premium

Your number: after about 2 weeks of steps and weigh-ins, StepFast estimates the daily step count where your weight tends to stay steady, and keeps refining it as your data grows.
Full trends: weight, steps and fasting hours over 7, 14, 30 or 90 days.
Regain alerts: choose the range you are comfortable with, and get a gentle heads-up if your 7-day average keeps rising above it.
Days that are different: plan around a dinner out, a sick day or a day you can't walk.

Prices

$9.99 per month
$19.99 every 3 months
$39.99 per year

There is no free trial and no weekly plan. You can keep using the free version as long as you like.

Premium is an optional auto-renewing subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless you turn off auto-renew at least 24 hours before the end of the current billing period. You can manage or cancel anytime in your Apple Account settings. Prices are in US dollars and may vary by country; the App Store purchase screen shows the final price.

Please note

StepFast is for adults 18 and over.

StepFast is a general wellness app, not a medical device, and it does not give medical advice. Its numbers are estimates. They are not intended to diagnose, treat, cure or prevent any condition. Talk to your doctor before you start a fasting or weight-loss plan, especially if you have a medical condition or take medication.

StepFast · Coming soon to the App Store

Contact: qyairbx@outlook.com

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