# 16 vs Simple Fasting App

The clearest difference is in-app purchases: Simple Fasting App at none against 16's 3. 16's advantage is update cadence (every 9 days vs every 6 weeks) and iOS requirement (15.0 vs 17.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. 16 sells 3 in-app purchases, starting at $1.99 per month. Simple Fasting App asks for nothing beyond the download.

16 holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 54 and 46 respectively. Written reviews split almost evenly too, at 78% and 77% positive.

16 ships an update every 9 days, Simple Fasting App every 6 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 16 | Simple Fasting App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (54 ratings)](https://appshunter.io/ios/app/168-intermittent-fasting/id6708227128/reviews)** | [4.5 (46 ratings)](https://appshunter.io/ios/app/simple-fasting-app/id6738610803/reviews) |
| Number of ratings | **54** | 46 |
| Positive reviews | **77.8% of reviews** | 76.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 6 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Heze Refresh Network Technology Co., Ltd](https://appshunter.io/developer/1690178793) | [Mehmet Emrah Konya](https://appshunter.io/developer/1752657386) |

## What reviewers say

### 16

[App page](https://appshunter.io/ios/app/168-intermittent-fasting/id6708227128)

This app helps users adopt intermittent fasting by tracking fasting periods, weight changes, and daily water intake. It integrates with Apple Health to import exercise data, providing insights into daily activity alongside dietary progress.

**Highlights:** Fasting tracking, Weight tracking, Water intake tracking, HealthKit integration, Fasting progress visualization

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $1.99 | per month |
| Pro (Yearly) | $8.99 | per year |
| Pro (Lifetime) | $17.99 | one-time |


### Simple Fasting App

[App page](https://appshunter.io/ios/app/simple-fasting-app/id6738610803)

This app simplifies intermittent fasting with a focus on privacy and ease of use. It offers popular fasting schedules, progress tracking, and smart notifications without ads, subscriptions, or data collection.

**Highlights:** Free and private, Popular fasting schedules, Progress tracking, Smart notifications, Intuitive design, Customizable themes, Quick start

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

**In-app purchases:** none


## Frequently asked questions

### Is 16 free?

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

### Is Simple Fasting App free?

Simple Fasting App is free to download, with no in-app purchases.

### Which has better reviews, 16 or Simple Fasting App?

16 is rated higher. 16 averages 4.7 out of 5 from 54 ratings, while Simple Fasting App averages 4.5 from 46 ratings.

### Do 16 or Simple Fasting App have ads?

Neither 16 nor Simple Fasting App shows ads.

### Which is updated more often, 16 or Simple Fasting App?

16 ships an update every 9 days, and Simple Fasting App every 6 weeks. Most recently, 16 was updated on October 24, 2026 and Simple Fasting App on October 25, 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.*