# Fasting interval 16 vs Fast

The clearest difference is in-app purchases: Fasting interval 16 at none against Fast's 8. Fasting interval 16 also leads on update cadence (weekly vs every 2 months) and iOS requirement (11.0 vs 18.6). Fast's advantage is review sentiment (75% vs 50%). On price, ads and device support there is nothing between them.

Both are free to download. Fast sells 8 in-app purchases, starting at $4.99 per month. Fasting interval 16 asks for nothing beyond the download.

Fasting interval 16 ships an update weekly, Fast every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Fasting interval 16 | Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3.3K ratings)](https://appshunter.io/ios/app/fast-fasting-tracker-and-timer/id1545737691/reviews)** |
| Number of ratings | — | **3.3K** |
| Positive reviews | 50.0% of reviews | **74.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 116 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 12+ |
| Developer | [Dirk Storjohann](https://appshunter.io/developer/1456635825) | [Maxima Apps](https://appshunter.io/developer/1153277200) |

## What reviewers say

### Fasting interval 16

[App page](https://appshunter.io/ios/app/fasting-interval-168/id1494623370)

This app helps you track your intermittent fasting schedule. Simply input your fasting start time, and it will monitor your progress and notify you when your fasting interval concludes. It's designed to support your intermittent fasting journey.

**Highlights:** Intermittent fasting tracking, Fasting start time input, Fasting interval end notification, Supports 16:8 fasting schedule, Proven effectiveness support

**Features:** macOS Compatibility

**In-app purchases:** none


### Fast

[App page](https://appshunter.io/ios/app/fast-fasting-tracker-and-timer/id1545737691)

This app helps you track intermittent fasting routines, monitor progress, and analyze health data. It offers educational content, motivational challenges, and a journal to record your feelings. Connect with friends for support and motivation on your wellness journey.

**Highlights:** Fasting timer and tracker, Progress analytics and history, Educational 'Know It' section, Motivational challenges and trophies, Mood tracker and journal, Health app integration (steps), Fasting buddy feature

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast Premium Monthly | $4.99 | per month |
| Fasting Monthly | $14.99 | per month |
| Fasting Annually | $19.99 | per year |
| Fasting Premium | $27.99 | per 3 months |
| Fast Premium Yearly | $29.99 | per year |
| Fasting Premium Yearly | $39.99 | per year |
| Fasting One Time Special Offer | $19.99 | one-time |
| Fasting Pro | $49.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for weight loss
- 👍 Motivating with trophies
- 👍 Customizable fasting plans
- 👍 Integrates with health apps

**What reviewers complain about**

- 🐛 Timer issues/inaccuracies
- 🐛 Inability to edit fasting times
- 🐛 Syncing/data saving problems
- 🐛 Crashes and glitches
- 🔍 Lacking advanced features

**Reported bugs**

- Timer not accurately recording fasting times
- Inability to update weight in app
- Crashing when trying to view friend's status

**Requested features**

- Option to edit fasting start/end times
- More detailed analytics and progress tracking
- Improved syncing and data saving reliability
- Expanded customization options


## Frequently asked questions

### Is Fasting interval 16 free?

Fasting interval 16 is free to download, with no in-app purchases.

### Is Fast free?

Fast is free to download, with in-app purchases available.

### Do Fasting interval 16 or Fast have ads?

Neither Fasting interval 16 nor Fast shows ads.

### Which is updated more often, Fasting interval 16 or Fast?

Fasting interval 16 ships an update weekly, and Fast every 2 months. Most recently, Fasting interval 16 was updated on November 3, 2026 and Fast on November 3, 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.*