# Fasting Window vs Sleep Debt Tracker & Coach

The clearest difference is in-app purchases: Fasting Window at none against Sleep Debt Tracker & Coach's 2. Fasting Window also leads on iOS requirement (13.0 vs 18.0). Sleep Debt Tracker & Coach's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Sleep Debt Tracker & Coach sells 2 in-app purchases, starting at $4.99 per month. Fasting Window asks for nothing beyond the download.

Fasting Window ships an update every 2 months, Sleep Debt Tracker & Coach every 3 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Fasting Window | Sleep Debt Tracker & Coach |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 21 MB | 20 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [HeungYeol Kim](https://appshunter.io/developer/1878087341) | [Salih Gole](https://appshunter.io/developer/822917887) |

## 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


### Sleep Debt Tracker & Coach

[App page](https://appshunter.io/ios/app/sleep-debt-tracker-and-coach/id6816373249)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $4.99 | per month |
| Plus Yearly | $29.99 | per year |


## Frequently asked questions

### Is Fasting Window free?

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

### Is Sleep Debt Tracker & Coach free?

Sleep Debt Tracker & Coach is free to download, with in-app purchases available.

### Do Fasting Window or Sleep Debt Tracker & Coach have ads?

Neither Fasting Window nor Sleep Debt Tracker & Coach shows ads.

### Which is updated more often, Fasting Window or Sleep Debt Tracker & Coach?

Fasting Window ships an update every 2 months, and Sleep Debt Tracker & Coach every 3 days. Most recently, Fasting Window was updated on October 31, 2026 and Sleep Debt Tracker & Coach on October 24, 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.*