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Fastin: Intermittent Fasting app icon#12in Intermittent Fasting

Fastin: Intermittent Fasting

Intermittent Fasting · Free + IAP
A Tier
Excellent · #12 of 34
88
4.8★10.2K ratings
Free + IAPprice
5mosince update

What is Fastin?

Fastin: Intermittent Fasting is a Health & Fitness app for intermittent fasting. It offers a step-by-step fasting guide, personalized fasting plans (6 plans available), and body status information during fasting. It also includes food, weight, water, sleep and activity trackers, fasting statistics, and knowledge courses on fasting and nutrition.

Pricing. Fastin: Intermittent Fasting is free to download, with in-app purchases on the App Store.

Good for

  • Tracking fasting windows and weight changes over time
  • Logging meals, water, sleep and activity in one app
  • Reading fasting and nutrition courses alongside tracking

Screenshots

1 / 8

Why this app is in A tier

Fastin scores 88 out of 100: rating 96, rating count 81, App Store search rank 91, update recency 84. The four parts are averaged with no weights, and A tier follows from that score within this list. The full explanation, as data.

Description

Do you know how to lose weight and keep it for a lifetime? We have no way to exercise for 3 hours a day, weigh food, and count calories anytime. But we can control when to eat to Lose Weight which is FASTING. All you need to do is shift eating time to lose weight. The most popular and healthy way to lose weight from our wise ancients. Let’s guide you on how to start your fasting journey. Fastin: Intermittent Fasting is a simple fasting app, a powerful weight-loss tool. Lose weight, improve your health and simplify your lifestyle. Intermittent fasting has a powerful effect on your body and brain and may help you live a longer, healthier life. Intermittent fasting(IF) doesn’t specify which foods you should eat, but rather when you should eat them. Learn the science behind intermittent fasting(IF) so you can use it to achieve your goals. LIVE LONGER & LOOK BETTER HOW WE HELP YOU MASTER INTERMITTENT FASTING Fasting guidance A step-by-step guide to intermittent fasting Smart and flexible tracking tools that adapt to your needs Body status shows you what’s happening to your body when fasting Personalized fasting plans based on your body condition (6 plans available) Fasting Tool

Compare in Intermittent Fasting

MeasureFastinIntermittent Fasting and Diet.Fast
TierAAA
Score88 / 10089 / 10087 / 100
Rating4.8 ★4.7 ★4.7 ★
Ratings10.2K5.3K3.3K
Last update160d ago53d ago56d ago
PriceFree + IAPFree downloadFree + IAP

Alternatives

See all 33 ›
  1. ZeroFree + IAP · ★ 4.8S
  2. Fastic Weight Loss & FastingFree + IAP · ★ 4.8S
  3. Intermittent Fasting TrackerFree + IAP · ★ 4.9S

Where else it ranks

Questions about Fastin

Is the app free to use?

The app is free to download. The listing says in-app purchases are available, and full access to all features and a personalized fasting plan with a nutrition guide requires an in-app purchase.

Does it work with Apple Health?

Yes. It integrates with the Apple Health app to sync data, requires iOS 9 and above, and supports Face ID for security.

Who should not use intermittent fasting?

It is not suitable for pregnant or nursing women, children under 18, or people with diagnosed eating disorders, and advises consulting a doctor or health care professional.

Is Fastin free?

Fastin is free to download, with in-app purchases.

What is Fastin good for?

Fastin is built for tracking fasting windows and weight changes over time, logging meals, water, sleep and activity in one app, reading fasting and nutrition courses alongside tracking. It sits in the intermittent fasting list on AppTierList.

Is Fastin worth it?

Fastin is A tier, ranked #12 of 34 intermittent fasting apps with a score of 88 out of 100, from a 4.8 App Store rating across 10,155 ratings. It is in the list's top tiers; 11 apps rank above it.

How does Fastin compare to Intermittent Fasting and Diet.?

Fastin is A tier at 88; Intermittent Fasting and Diet. is A tier at 89. Intermittent Fasting and Diet. ranks higher. Fastin is free to download, with in-app purchases, Intermittent Fasting and Diet. is free to download.

How often is Fastin updated?

Fastin was last updated on 2026-05-13, 160 days ago.

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All the facts

List
Intermittent Fasting
Tier
A (Excellent)
Score
88 / 100
Rank in list
#12 of 34
Ranking certainty
settled
Price
Free + IAP
App Store rating
4.8 out of 5
Number of ratings
10,155
Current version
(160 days ago)
App Store data read
App Store category
Health & Fitness
Good for
Tracking fasting windows and weight changes over time, Logging meals, water, sleep and activity in one app, Reading fasting and nutrition courses alongside tracking
Requires
iOS 16.6 or later
Size
243 MB
Age rating
17+
Languages
9
Developer pages
Website · Support · Privacy policy
Maker
unclaimed
As data
JSON · why it ranks here

Ranking refreshed · how it is computed