# FastBit vs EatWindow

The clearest difference is in-app purchases: FastBit at none against EatWindow's 3. On price, update cadence, ads and device support there is nothing between them.

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

FastBit ships an update every 8 months, EatWindow every 4 months. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | FastBit | EatWindow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Size | 2 MB | 18 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Martin Stanek](https://appshunter.io/developer/955316341) | [Dustin Bel](https://appshunter.io/developer/1009829311) |

## What reviewers say

### FastBit

[App page](https://appshunter.io/ios/app/fastbit/id6738841241)

**In-app purchases:** none


### EatWindow

[App page](https://appshunter.io/ios/app/eatwindow-fasting-tracker/id6756801155)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $1.99 | per month |
| Premium - Yearly | $7.99 | per year |
| Premium - liftetime | $12.99 | one-time |


## Frequently asked questions

### Is FastBit free?

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

### Is EatWindow free?

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

### Do FastBit or EatWindow have ads?

Neither FastBit nor EatWindow shows ads.

### Which is updated more often, FastBit or EatWindow?

FastBit ships an update every 8 months, and EatWindow every 4 months. Most recently, FastBit was updated on October 1, 2026 and EatWindow on October 8, 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.*