Comparison

Fasti vs Just Fasting

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

Head to head
About

Fasti

This app offers a simple and beautiful intermittent fasting timer with AI coaching to help users stay motivated and informed. It tracks fasts, indicates fat burn periods, and provides progress visualization and educational guidance.

Highlights
  • Fasting timer with start, pause, and complete functions
  • Maximum Fat Burn Indicator
  • Customizable motivational posters
  • Weekly and calendar progress views
  • AI-powered fasting guidance
  • Clean and simple user interface
Features
Read full description

Fasti: Fasting Tracker & Timer Your simple, beautiful fasting timer with AI coaching to help you stay consistent, motivated, and informed. Whether you’re new to intermittent fasting or building a long-term routine, Fasti makes fasting easy to understand and effortless to follow. Track your fast with confidence Use Fasti’s fasting timer tracker to start, pause, and complete fasts with ease. A clean, distraction-free design helps you focus on your goal without complexity. Know when fat burn begins Fasti includes a Maximum Fat Burn Indicator to help you understand when your body reaches peak ketosis. Learn how your fasting window aligns with fat burning and metabolic benefits without guesswork. Stay motivated every day Build consistency with a custom motivational poster that combines uplifting visuals and encouraging text. Designed to keep you inspired during long fasts and busy days. See your progress over time Track your journey with weekly and calendar-based progress views. Visualize completed fasts, streaks, and trends so you can stay accountable and motivated. Learn with your personal AI fasting coach Have questions about fasting? Fasti’s AI fasting coach helps you learn more about intermittent fasting schedules, fat burning, ketosis, and best practices. Designed to be simple and beautiful Fasti is built with a clean, modern UI that’s easy to use and calming to look at. No clutter. No overwhelm. Just a fasting companion that fits into your day. Why users choose Fasti • Easy-to-use fasting timer • Fat burn and ketosis insights • Daily motivation and encouragement • Weekly and calendar progress tracking • AI-powered fasting guidance Start your fasting journey today Download Fasti: Fasting Timer and take the guesswork out of intermittent fasting with clarity, motivation, and support. Fasti: Fasting Tracker & Timer includes a free version and an optional subscription for premium features. A free trial is available. Download Fasti: Fasting Tracker & Timer to get started. Payment for Fasti+ will be charged to your iTunes Account when you subscribe. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period Manage your subscription by going to your Account Settings. Read more terms & conditions: Terms of use: https://www.stierapps.com/fasti_terms Privacy policy: https://www.stierapps.com/fasti_privacy_policy

About

Just Fasting

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.

Screenshots

Fasti4 screens
Just Fasting3 screens

Verdict

The call

The clearest difference is in-app purchases: Just Fasting at none against Fasti's 2. Fasti's advantage is iOS requirement (17.6 vs 26.4). On price, update cadence, ads and device support 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. Fasti sells 2 in-app purchases, starting at $9.99 per month. Just Fasting asks for nothing beyond the download.

UpkeepUpdate frequency

Fasti ships an update daily, Just Fasting every 2 days. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level
Fasti versus Just Fasting: the parameters behind the verdict, then further details
ParameterFastiJust Fasting
PriceFreeFree
Rating4.9 (15 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings15 — better—
Update frequencyDaily — betterEvery 2 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better26.4
Further details — not scored
Size23 MB2 MB
Age rating4+4+
DeveloperStellar Apps, Limited Liability CompanyMatthew Clark

In-app purchases

2 purchases

Fasti

Subscriptions2
  • Fasti+ Monthly$9.991 Month
  • Fasti+ Annual$69.991 Year
None

Just Fasting

No in-app purchases

Questions

Is Fasti free?
Fasti is free to download, with in-app purchases available.
Is Just Fasting free?
Just Fasting is free to download, with no in-app purchases.
Do Fasti or Just Fasting have ads?
Neither Fasti nor Just Fasting shows ads.
Which is updated more often, Fasti or Just Fasting?
Fasti ships an update daily, and Just Fasting every 2 days. Most recently, Fasti was updated on October 2, 2026 and Just Fasting on October 6, 2026.

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