Comparison

Just Fasting vs JustFast

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

Head to head
About

Just Fasting

This app helps you track your fasting periods with a simple, uncluttered interface. Easily start custom fasts of varying lengths and monitor your progress with detailed statistics. It's designed to be unobtrusive and straightforward for your intermittent fasting journey.

Highlights
  • Customizable fast durations (hours and days)
  • One-tap start for common fasts
  • Visual countdown and progress arc
  • Detailed fasting statistics
  • Streak tracking
  • Remember last fast length
Features
Read full description

ust Fasting is built to stay out of your way. Open the app and start fasting—no clutter, no noise. Start fasts your way • 16-hour fast — one tap, last meal is now (adjust if you need to). • Custom fast — pick hours (1–72) or longer fasts in days (4+), with no upper limit on days in the picker. • Last meal time defaults to now but you can change it if you finished eating earlier. Stay oriented A large countdown and an arc show how far you’ve come through your fast. When you hit your goal, wrap up with a tap. See your progress Statistics include total fasts, total time fasted, average length, longest fast, current streak, and best streak. The app remembers your last fast length so starting the same routine again is quick.

About

JustFast

This app offers a straightforward intermittent fasting timer. It focuses on tracking your fast with a clear, calm interface, providing insights into metabolic stages without gamification or pressure. It prioritizes privacy with on-device data storage and no accounts.

Highlights
  • One-tap start and stop
  • Live timer with accurate timekeeping
  • Metabolic milestone tracking
  • Plain-language explanations of milestones
  • Adjustable start/stop times
  • Ongoing notification for duration
  • Simple history of past fasts
  • 18 languages and dark design
Features
Read full description

Fasting is a beautifully simple intermittent-fasting timer that does one thing well: it tracks your fast. No goals to hit. No streaks to protect. No accounts, no ads, no clutter. Just tap once to begin, and a calm live timer counts your fast while a glowing ring fills toward the next stage your body moves through. WHY IT'S DIFFERENT Most fasting apps pile on dashboards, reminders, and pressure. This one strips fasting back to its essence — a clear timer you can glance at and put away. It's designed to feel quiet and focused, not gamified. WHAT YOU GET • One-tap start and stop, with a big, satisfying button • A live timer that keeps perfect time across restarts, time-zone changes, and daylight saving • Metabolic milestones — the ring fills toward the next stage (blood sugar settling, glycogen burning, fat burning, ketosis, autophagy, and more) • Tap any milestone for an honest, plain-language explanation of what's happening in your body • Forgot to start the timer? Just tap the ring to fix your start time. Forgot to stop? End your fast at the right time after the fact. • An ongoing notification shows your current duration at a glance • A simple history of past fasts — swipe to delete • 18 languages and a clean dark design HONEST BY DESIGN The milestone descriptions are written plainly and honestly. Where the science is still early or based mostly on animal research, we say so. This app is a timer and an educational companion — not medical advice. PRIVATE BY DEFAULT Your data stays on your device. There are no accounts, no sign-ups, no tracking, and nothing is uploaded. Fasting works for 16:8, OMAD, alternate-day, extended fasts, or any schedule you like — because it never forces a schedule on you. Note: Fasting is not a medical device and does not provide medical advice. Talk to a healthcare professional before starting any fasting regimen, especially if you are pregnant, nursing, taking medication, or have a medical condition.

Screenshots

Just Fasting3 screens
JustFast4 screens

Verdict

The call

The clearest difference is rating: JustFast at 4.5 against Just Fasting's 4.0. JustFast also leads on iOS requirement (18.0 vs 26.4). Just Fasting's advantage is update cadence (every 2 days vs fortnightly). On price, ratings volume, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

JustFast holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Just Fasting ships an update every 2 days, JustFast fortnightly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 6 level
Just Fasting versus JustFast: the parameters behind the verdict, then further details
ParameterJust FastingJustFast
PriceFreeFree
Rating4.0 (1 ratings)4.5 (2 ratings) — better
Number of ratings12 — better
Update frequencyEvery 2 days — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.418.0 — better
Further details — not scored
Size2 MB20 MB
Age rating4+4+
DeveloperMatthew ClarkVitalii Vyrodov

In-app purchases

None

Just Fasting

No in-app purchases

None

JustFast

No in-app purchases

Questions

Is Just Fasting free?
Just Fasting is free to download, with no in-app purchases.
Is JustFast free?
JustFast is free to download, with no in-app purchases.
Which has better reviews, Just Fasting or JustFast?
JustFast is rated higher. Just Fasting averages 4.0 out of 5 from 1 ratings, while JustFast averages 4.5 from 2 ratings.
Do Just Fasting or JustFast have ads?
Neither Just Fasting nor JustFast shows ads.
Which is updated more often, Just Fasting or JustFast?
Just Fasting ships an update every 2 days, and JustFast fortnightly. Most recently, Just Fasting was updated on October 31, 2026 and JustFast on November 5, 2026.

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