# 16 vs Rings

The clearest difference is update cadence: 16 at every 5 days against Rings's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 16 sells 3 in-app purchases, starting at $6.99 per 7 days and Rings sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

16 ships an update every 5 days, Rings every 3 weeks. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 16 | Rings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (64 ratings)](https://appshunter.io/ios/app/168intermittent-fasting-app/id6478310864/reviews)** | — |
| Number of ratings | **64** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 71 MB | 11 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AV PRO GROUP LTD](https://appshunter.io/developer/1699441355) | [Alexander Grigoriev](https://appshunter.io/developer/1490650957) |

## What reviewers say

### 16

[App page](https://appshunter.io/ios/app/168intermittent-fasting-app/id6478310864)

This app guides users through intermittent fasting with personalized plans and convenient tracking tools. It helps manage weight, boost energy, and improve overall health with customizable reminders.

**Highlights:** Personalized intermittent fasting plans, Fasting and eating window tracking, Customizable start/end reminders, AI Calorie Tracker, Weight loss support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $6.99 | per 7 days |
| Premium Yearly Plan | $39.99 | per year |
| Premium Yearly Plan | $49.99 | per year |


### Rings

[App page](https://appshunter.io/ios/app/rings-meditation-timer/id6815719439)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rings Pro Monthly | $3.99 | per month |
| Rings Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is 16 free?

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

### Is Rings free?

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

### Do 16 or Rings have ads?

Neither 16 nor Rings shows ads.

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

16 ships an update every 5 days, and Rings every 3 weeks. Most recently, 16 was updated on October 30, 2026 and Rings on November 6, 2026.

---

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