# Fast vs 16

The clearest difference is rating: Fast at 4.7 against 16's 4.0. Fast also leads on ads (none vs shown) and ratings volume (3.3K vs 4). 16's advantage is review sentiment (100% vs 75%) and iOS requirement (13.0 vs 18.6). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Fast sells 8 in-app purchases, starting at $4.99 per month and 16 sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fast holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Fast has 3.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 75% of Fast's written reviews are positive against 100% of 16's, so the app with the better star average is not the one people write more warmly about.

Fast ships an update every 2 months, 16 every 6 weeks. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Fast | 16 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.3K ratings)](https://appshunter.io/ios/app/fast-fasting-tracker-and-timer/id1545737691/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/168-fasting-timer/id6449992745/reviews) |
| Number of ratings | **3.3K** | 4 |
| Positive reviews | 74.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 116 MB | 54 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Maxima Apps](https://appshunter.io/developer/1153277200) | [Maple Labs Co., Ltd](https://appshunter.io/developer/1320450180) |

## What reviewers say

### 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


### 16

[App page](https://appshunter.io/ios/app/168-fasting-timer/id6449992745)

Track your intermittent fasting journey with customizable plans and real-time analytics. Log meals and water intake, and receive personalized meal tips to support your weight loss goals. Supports various popular fasting methods.

**Highlights:** Intermittent fasting timer, Custom fasting plans, Real-time analytics, Meal and water tracker, Meal tips and recipes, Multiple fasting modes

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Yearly Premium | $12.99 | per year |
| Premium | $12.99 | per 3 months |
| Premium | $24.99 | per 3 months |


## Frequently asked questions

### Is Fast free?

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

### Is 16 free?

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

### Which has better reviews, Fast or 16?

Fast is rated higher. Fast averages 4.7 out of 5 from 3.3K ratings, while 16 averages 4.0 from 4 ratings.

### Do Fast or 16 have ads?

16 shows ads; Fast does not.

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

Fast ships an update every 2 months, and 16 every 6 weeks. Most recently, Fast was updated on September 28, 2026 and 16 on September 17, 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.*