# Fasting Window vs Somnio

The clearest difference is in-app purchases: Fasting Window at none against Somnio's 2. Fasting Window also leads on iOS requirement (13.0 vs 17.6). Somnio's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Somnio sells 2 in-app purchases, starting at $1.99 per month. Fasting Window asks for nothing beyond the download.

Fasting Window ships an update every 2 months, Somnio weekly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fasting Window | Somnio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 21 MB | 33 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [HeungYeol Kim](https://appshunter.io/developer/1878087341) | [Dan Reutchi](https://appshunter.io/developer/6777392160) |

## What reviewers say

### Fasting Window

[App page](https://appshunter.io/ios/app/fasting-window-if-timer/id6774622599)

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

**In-app purchases:** none


### Somnio

[App page](https://appshunter.io/ios/app/somnio-sleep-tracker/id6777392158)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Somnio Plus | $1.99 | per month |
| Somnio Plus Yearly | $14.99 | per year |


## Frequently asked questions

### Is Fasting Window free?

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

### Is Somnio free?

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

### Do Fasting Window or Somnio have ads?

Neither Fasting Window nor Somnio shows ads.

### Which is updated more often, Fasting Window or Somnio?

Fasting Window ships an update every 2 months, and Somnio weekly. Most recently, Fasting Window was updated on October 31, 2026 and Somnio 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.*