Comparison

Intermittent Fasting vs Fasty

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

Head to head
About

Intermittent Fasting

Features
Read full description

Biwo makes intermittent fasting simple and fun. Track your fasting sessions with a beautiful circular timer, see your progress through different fasting phases, and build healthy habits effortlessly. Choose your fasting method: • 16:8 - The most popular method • 18:6 - For experienced fasters • 20:4 - Advanced fasting • OMAD (23:1) - One Meal A Day Features: • Beautiful circular timer with real-time progress • Scan meals for instant calorie & nutrition info • Fat burning & autophagy phase tracking • Complete fasting history • Day Streak tracker to keep you motivated • Start a fast in just one tap • Works completely offline - no account needed • Personalized onboarding Start your fasting journey today with Biwo! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Fasty

Features
Read full description

Fasty is the simplest way to track intermittent fasting — 16:8, 18:6, 20:4, OMAD, or custom. One tap to start. Live Activities keep your progress on the Lock Screen without opening the app. Pick a plan, tap Start, and let Fasty take care of the rest. Your fasting timer lives where you actually look: the Home Screen widget, the Lock Screen Live Activity, and the Dynamic Island, so you always know how long you have left without opening the app. WHY FASTY - Quiet by design. No streak shaming, no animated pressure, no push spam. - Local-first. Your data stays on your device. No account. No backend. No tracking. - Just enough features. A timer, proven plans, history, widgets, and Live Activities. PLANS INCLUDED - 16:8: the most popular daily window. - 18:6: a tighter eating window for experienced fasters. - 20:4: the Warrior style, one main meal. - 24h: a full-day fast for an occasional reset. WIDGETS & LIVE ACTIVITY Add the Fasty widget to your Home Screen or Lock Screen and your remaining time updates automatically. When you start a fast, a Live Activity appears in the Dynamic Island and on the Lock Screen so progress is one glance away. NOTIFICATIONS Fasty sends a single local notification when your fasting window completes. No marketing pushes, no streak nags. You can turn notifications off any time in iOS Settings. PRIVACY Fasty does not collect data. There is no sign-in. Your fasting history lives only on your device and is shared with the widget through Apple App Groups, never sent to a server. MEDICAL DISCLAIMER Fasty is a habit-tracking timer, not medical software. Fasting is not appropriate for everyone. If you are pregnant, breastfeeding, under 18, have a history of eating disorders, diabetes, any chronic condition, or are taking long-term medication, consult a qualified healthcare provider before starting any fasting regimen. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Intermittent Fasting4 screens
Fasty3 screens

Verdict

The call

Intermittent Fasting and Fasty are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Intermittent Fasting sells 3 in-app purchases, starting at $1.99 per 7 days and Fasty sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. Both last shipped on October 31, 2026.

ScorecardNo meaningful differences
Intermittent Fasting versus Fasty: the parameters behind the verdict, then further details
ParameterIntermittent FastingFasty
PriceFreeFree
Update frequencyEvery 3 daysEvery 3 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size68 MB3 MB
Age rating4+4+
DeveloperSylvain Fertons长贵 周

In-app purchases

3 purchases

Intermittent Fasting

Subscriptions3
  • Biwo Pro Weekly$1.997 Days
  • Biwo Pro Monthly$4.991 Month
  • Biwo Pro Yearly$49.991 Year
2 purchases

Fasty

Subscriptions2
  • Fasty Plus (Weekly)$1.997 Days
  • Fasty Plus (Yearly)7 Days trial$19.991 Year

Questions

Is Intermittent Fasting free?
Intermittent Fasting is free to download, with in-app purchases available.
Is Fasty free?
Fasty is free to download, with in-app purchases available.
Do Intermittent Fasting or Fasty have ads?
Neither Intermittent Fasting nor Fasty shows ads.
Which is updated more often, Intermittent Fasting or Fasty?
Intermittent Fasting ships an update every 3 days, and Fasty every 3 days. Most recently, Intermittent Fasting was updated on October 31, 2026 and Fasty on October 31, 2026.

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