Comparison

Moonfast vs Steady

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Moonfast

This app provides a calm and quiet intermittent fasting timer. It offers customizable fasting protocols, live activity integration for lock screen tracking, and a gentle timeline of fasting stages. It also logs your history, weight, and vital signs, with a focus on privacy.

Highlights
  • Customizable fasting protocols
  • Live Activity timer on lock screen
  • Gentle stage timeline
  • Fasting history and streaks
  • Optional weight and vital sign logging
  • Apple Health integration
  • Private by default, no account needed
Features
Read full description

Moonfast is a quiet intermittent-fasting timer for people who would rather not be shouted at by an app. Pick a protocol — 16:8, 18:6, 20:4, OMAD, or your own hours — and start. The ring shows how far into your fast you are, and keeps counting if you go past your goal. LIVE ON YOUR LOCK SCREEN Start a fast and it appears as a Live Activity, so the timer is there without unlocking. The Dynamic Island keeps it at a glance, and Home and Lock Screen widgets show your current fast, your streak and your longest fast so far. A GENTLE STAGE TIMELINE As the hours pass, Moonfast describes the stages people commonly associate with fasting windows. It is written to be interesting, not instructive — bodies differ, and the app says so. YOUR HISTORY, HONESTLY A calendar of the fasts you have finished, current and longest streaks, weekly averages and personal bests. When there is not enough data yet for a number to mean anything, Moonfast says that instead of inventing one. WEIGHT, SMOOTHED Log your weight, or connect Apple Health and let it come across on its own. Moonfast draws a smoothed trend line through the daily noise, because day-to-day weight moves on water alone. Connecting Apple Health is optional, and the app works fully without it. VITALS, SIDE BY SIDE If Apple Health has your resting heart rate, heart rate variability or time asleep, Moonfast charts them next to the days you fasted. It shows the readings; it does not tell you what they mean. Readings come from an Apple Watch or another app — Moonfast only reads them. HYDRATION Log water, tea or coffee while you fast. If you want a daily target you can set one — Moonfast will not pick one for you. PRIVATE BY DEFAULT No account. No servers. No analytics. Everything you log stays on your iPhone, and you can export all of it as JSON or delete every trace of it whenever you like. Moonfast is a timer and a log. It is not a medical device, and it does not give medical advice, diagnosis or treatment. Talk to a doctor before you change how you eat, especially if you take medication or have a health condition. Moonfast is not intended for anyone under 18, for anyone who is pregnant or breastfeeding, or for anyone with or recovering from an eating disorder.

About

Steady

This app helps users navigate the most challenging hours of intermittent fasting. It focuses on providing support during difficult moments rather than tracking calories or meals. Features include a timer, mood logging, guided breathing exercises, and a record of what helped users succeed.

Highlights
  • Fasting timer for 12-20 hour windows
  • Mood logging with check-ins
  • Guided breathing exercises
  • Offline functionality
  • Personalized record of what helps
  • Water logging and timing suggestions
Features
Read full description

Other fasting apps count the hours. Steady gets you through the hard one. For people who already fast and keep breaking at the same stretch. Not a diet app: no calories, no meal plans, no weight tracking. A streak to protect. Badges to earn. Water, weight and steps to log. A dozen pings before lunch. None of it helps at the hour you want to eat, and all of it is one more thing to fall behind on. Steady is a timer, one check-in before the hour you usually quit, something to do while that hour passes, and a record that tells the truth. That is the whole app. Hungry is easy. Tired, hungry and low, all at once, is what beats you. That stack lands around the same hour of a fast and lifts not long after, and no timer notices. Steady learns when it hits you, checks in just ahead of it, gives you three minutes of slow breathing to get through it, and two hours later shows you, from your own record, that it passed. WHAT IT IS - A fasting timer for 12 to 20 hour windows. - One check-in, two taps: pick a mood, log it. - Three minutes of paced breathing when a check-in is low. The circle fills, you breathe in; it empties, you breathe out. A gentle pulse in your hand marks each breath, so you can shut your eyes. Works offline. - A small puzzle if breathing is not your thing. A new one every time. No clock, no score. - Then one question: how is it now? Steady keeps the answer and tells you plainly whether it lifted. - Or water and a ten-minute wait, with the drink picked for the time of day. Water first, nothing with caffeine late. - An honest record: how many you finished, your longest, and how often you felt better a little later after a low check-in, with the fasts you ended early counted against it. The You tab shows what got you through, counted from your own record. WHAT IT IS NOT - No streaks at all. No badges, no fire icons. Nothing resets, so there is nothing to lose. - Not a diet app. No calorie counting, meal plans, or water, weight or step logging. No meditation library to keep up with either. - No social feed, no ads, no analytics. - No inflated stages. Steady tops out at 20 hours and does not claim autophagy or ketosis, because they do not happen at 16 hours. IT WILL TELL YOU TO STOP Tap anything physical during a check-in (shaky, dizzy, heart racing) and Steady tells you to stop and eat, whatever the hour. YOUR DATA STAYS ON YOUR PHONE No account. No server. Everything Steady knows about you lives in a local database on your iPhone, and nothing you enter is sent anywhere. It all works offline. Delete the app and it is gone. Steady is not a medical device and does not give medical advice. If you take insulin, a sulfonylurea or an SGLT2 inhibitor, or have any condition affected by not eating, talk to your doctor before fasting. If you feel unwell during a fast, stop and eat. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://steadyfasting.app/privacy

Screenshots

Moonfast4 screens
Steady4 screens

Verdict

The call

The clearest difference is price: Steady at Free against Moonfast's $0.99. Steady also leads on ratings volume (3 vs 1). Moonfast's advantage is in-app purchases (none vs 2). On rating, review sentiment, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Steady is free to download; Moonfast costs $0.99 up front. Steady sells 2 in-app purchases, starting at $4.99 per 7 days. Moonfast asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Moonfast against 5.0 for Steady. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Moonfast ships an update every 2 days, Steady every 3 days. Both last shipped on October 31, 2026.

Scorecard4 real differences · 6 level
Moonfast versus Steady: the parameters behind the verdict, then further details
ParameterMoonfastSteady
Price$0.99Free — better
Rating5.0 (1 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 2 days — betterEvery 3 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size6 MB63 MB
Age rating4+12+
Developerhttps://airussolutions.com/ChamsDel LLC

Customer experience

Moonfast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Steady

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Moonfast

No in-app purchases

2 purchases

Steady

Subscriptions2
  • Weekly$4.997 Days
  • Annual14 Days trial$19.991 Year

Questions

Is Moonfast free?
Moonfast costs $0.99, with no in-app purchases.
Is Steady free?
Steady is free to download, with in-app purchases available.
Which has better reviews, Moonfast or Steady?
Moonfast and Steady are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.
Do Moonfast or Steady have ads?
Neither Moonfast nor Steady shows ads.
Which is updated more often, Moonfast or Steady?
Moonfast ships an update every 2 days, and Steady every 3 days. Most recently, Moonfast was updated on October 31, 2026 and Steady on October 31, 2026.

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