# FastHabit Intermittent Fasting vs AllyFast

The clearest difference is price: FastHabit Intermittent Fasting at Free against AllyFast's $0.99. FastHabit Intermittent Fasting also leads on ratings volume (14K vs 18) and iOS requirement (15.0 vs 18.2). AllyFast's advantage is review sentiment (100% vs 58%) and in-app purchases (none vs 3). On update cadence, ads and device support there is nothing between them.

FastHabit Intermittent Fasting is free to download; AllyFast costs $0.99 up front. FastHabit Intermittent Fasting sells 2 in-app purchases, starting at $59.99 per year. AllyFast asks for nothing beyond the download.

AllyFast holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: FastHabit Intermittent Fasting has 14K ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 58% of FastHabit Intermittent Fasting's written reviews are positive against 100% of AllyFast's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | FastHabit Intermittent Fasting | AllyFast |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.8 (14K ratings)](https://appshunter.io/ios/app/fasthabit-intermittent-fasting/id974978016/reviews) | **[5.0 (18 ratings)](https://appshunter.io/ios/app/allyfast-fasting-tracker/id6743131202/reviews)** |
| Number of ratings | **14K** | 18 |
| Positive reviews | 57.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | **Freemium** | Paid |
| Size | 31 MB | 2 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [App Holdings](https://appshunter.io/developer/808581339) | [Wonseok Lee](https://appshunter.io/developer/1801568032) |

## What reviewers say

### FastHabit Intermittent Fasting

[App page](https://appshunter.io/ios/app/fasthabit-intermittent-fasting/id974978016)

This app helps you establish and maintain intermittent fasting routines. It offers flexible tracking, reminders, and integrates with Apple Health and Apple Watch to monitor your progress and weight.

**Highlights:** Flexible fast length setting, Daily logging and progress tracking, Reminders and notifications, Weight tracking, Apple HealthKit integration, Apple Watch support, Data export

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastHabit Premium | $59.99 | per year |
| Upgrade To Pro | $2.99 | one-time |

**What reviewers like**

- 🚀 Simple and easy to use
- 👍 Clean and intuitive interface
- 🚀 Straightforward fasting tracking
- 🚀 Seamless Apple Watch integration
- 💰 Reasonable one-time purchase

**What reviewers complain about**

- 🐛 Issues with syncing across devices
- 🐛 Bugs with editing/extending fasts
- 🔒 Lack of cloud/iCloud sync
- 🔒 Limited customization options
- 🐛 Unreliable reminders/notifications

**Reported bugs**

- App freezing or crashing after updates
- Inability to manually add or edit fasts
- Inconsistent tracking of long fasts across days

**Requested features**

- Ability to track multiple fasts per day
- Option to set custom fasting duration goals
- More detailed fasting history and analytics
- Improved Apple Watch complications and controls
- Integration with other health/fitness apps


### AllyFast

[App page](https://appshunter.io/ios/app/allyfast-fasting-tracker/id6743131202)

This app offers a streamlined fasting timer with a clean, SwiftUI-based interface. It prioritizes user privacy with local data storage and provides science-based insights into fasting stages. Enjoy a clutter-free, ad-free experience with no subscriptions.

**Highlights:** SwiftUI fasting timer, Local data storage, No subscriptions or ads, Fasts up to 72 hours, Editable fasting history, Science-based fasting insights

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FastHabit Intermittent Fasting free?

FastHabit Intermittent Fasting is free to download, with in-app purchases available.

### Is AllyFast free?

AllyFast costs $0.99, with no in-app purchases.

### Which has better reviews, FastHabit Intermittent Fasting or AllyFast?

AllyFast is rated higher. FastHabit Intermittent Fasting averages 4.8 out of 5 from 14K ratings, while AllyFast averages 5.0 from 18 ratings.

### Do FastHabit Intermittent Fasting or AllyFast have ads?

Neither FastHabit Intermittent Fasting nor AllyFast shows ads.

### Which is updated more often, FastHabit Intermittent Fasting or AllyFast?

FastHabit Intermittent Fasting ships an update monthly, and AllyFast monthly. Most recently, FastHabit Intermittent Fasting was updated on October 18, 2026 and AllyFast on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*