Comparison

FastingCat vs Faast

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

Head to head
About

FastingCat

Master intermittent fasting with a focused timer and science-backed tracking. Monitor your progress with detailed insights, charts, and smart notifications to stay motivated and in control of your fasting journey. Your privacy is prioritized with on-device data storage and no ads.

Highlights
  • Customizable fasting presets
  • Science-backed fasting zone tracking
  • Detailed progress charts
  • Flexible scheduling with grace days
  • Smart notifications
  • Seamless weight logging
  • On-device data privacy
Features
Read full description

FastingCat is the fast, focused way to master intermittent fasting and watch the scale move. The app puts clear metrics and practical tools in your pocket so you can stay consistent, motivated and fully in control—for absolutely free. Why FastingCat? • Simple setup: pick a preset (16-8, 18-6, 20-4, 24-hour, alternate-day or create your own) and start the timer with one tap. • Science-backed tracking: see exactly when you move from Anabolic to Catabolic, Fat Burning, Ketosis, Deep Ketosis and Autophagy. • Deep insights at a glance: total fasting hours, completed fasts, streak length, best streak, grace days used, weight change and more. • Rich charts: overlay weight and fasting windows, follow your progress week over week and celebrate each downward trend. • Flexible scheduling: choose specific weekdays or let FastingCat ignore a set number of grace days so real life never breaks your streak. • Smart notifications: get reminded when your eating window closes, when a zone switches or when it is time to break your fast. • Seamless weight logging: import weight from the Health app or type manually; all data stays on device. • No account required, no ads, no cloud storage. Your privacy stays yours. Power users can: • Fine-tune presets with second-level precision • Track progress in both metric and imperial units How we keep you motivated • Streak tracking rewards consistency • Milestone badges for total hours and longest fast • Detailed fasting zone timeline so you can actually “see” ketosis flip on • Fast completion reports you can share anywhere Who is FastingCat for? • Beginners starting a weight-loss journey • Athletes cutting fat without losing muscle • Biohackers chasing autophagy benefits • Anyone who wants a distraction-free fasting timer with serious stats Disclaimer FastingCat is a lifestyle tracker, not medical advice. Intermittent fasting may not suit everyone. Consult a qualified healthcare professional before making any dietary or exercise changes. Privacy and Terms Your data never leaves your device unless you choose to export it. See the full policies: • Privacy Policy: https://sites.google.com/view/fastingcat-privacy-policy/home • Terms of Use: https://sites.google.com/view/fastingcat-terms-of-use/home

About

Faast

Features
Read full description

Faast is a fasting timer that does exactly one thing well. Help you track your intermittent fasting, simply and accurately. No subscriptions. No ads. No account required. Just open the app, start your fast, and see your progress in real time. WHY FAAST Most fasting apps bury the timer behind a paywall after a free trial. Faast is different, it's a clean, focused tool built for people who just want to fast without friction or upsells. FEATURES - One-tap start/stop timer, accurate to the second - Support for any fasting schedule: 16:8, 18:6, 20:4, OMAD, or fully custom windows - Clear visual progress toward your goal - Clean, minimal interface, no clutter, no distractions - Works fully offline, your data stays on your device BUILT FOR CONSISTENCY Intermittent fasting works best when it's easy to stick to. Faast strips away everything unnecessary so the only thing you focus on is your fast. YOUR DATA, YOUR DEVICE Faast doesn't require an account and doesn't send your data anywhere. Everything is stored locally on your iPhone. Whether you're new to intermittent fasting or a seasoned OMAD practitioner, Faast gives you a fast, honest tool to track your eating window and stay on target.

Screenshots

FastingCat4 screens
Faast4 screens

Verdict

The call

The clearest difference is in-app purchases: Faast at none against FastingCat's 10. Faast also leads on update cadence (every 2 days vs every 6 days). FastingCat's advantage is iOS requirement (17.0 vs 26.0). On price, 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. FastingCat sells 10 in-app purchases, starting at $0.99 per month. Faast asks for nothing beyond the download.

UpkeepUpdate frequency

FastingCat ships an update every 6 days, Faast every 2 days. The most recent releases landed on August 7, 2026 and September 25, 2026 respectively.

Scorecard3 real differences · 7 level
FastingCat versus Faast: the parameters behind the verdict, then further details
ParameterFastingCatFaast
PriceFreeFree
Rating4.9 (55 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings55 — better—
Update frequencyEvery 6 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better26.0
Further details — not scored
Size24 MB5 MB
Age rating4+4+
DeveloperProApps SolutionsLoan RIVIERE

In-app purchases

10 purchases

FastingCat

Subscriptions5
  • Monthly Donation (Cookie)$0.991 Month
  • Monthly Donation (Donut)$2.491 Month
  • Monthly Donation (Smoothie)$4.991 Month
Show 2 more
  • Monthly Donation (Salad)$7.991 Month
  • Monthly Donation (Protein)$9.991 Month
One-time5
  • One-time Donation (Coffee)$1.99
  • One-time Donation (Sandwich)$4.99
  • One-time Donation (Pizza)$9.99
Show 2 more
  • One-time Donation (Groceries)$24.99
  • One-time Donation (Books)$49.99
None

Faast

No in-app purchases

Questions

Is FastingCat free?
FastingCat is free to download, with in-app purchases available.
Is Faast free?
Faast is free to download, with no in-app purchases.
Do FastingCat or Faast have ads?
Neither FastingCat nor Faast shows ads.
Which is updated more often, FastingCat or Faast?
FastingCat ships an update every 6 days, and Faast every 2 days. Most recently, FastingCat was updated on August 7, 2026 and Faast on September 25, 2026.

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