# Fasting Tracker Pro vs Keel

The clearest difference is update cadence: Fasting Tracker Pro at every 3 weeks against Keel's every 5 months. Keel's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fasting Tracker Pro ships an update every 3 weeks, Keel every 5 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Fasting Tracker Pro | Keel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Size | 7 MB | 29 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cosmic Production d.o.o.](https://appshunter.io/developer/1882842325) | [ALASDAIR CUNNINGHAM](https://appshunter.io/developer/1889323128) |

## What reviewers say

### Fasting Tracker Pro

[App page](https://appshunter.io/ios/app/fasting-tracker-pro-if/id6761078928)

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

**In-app purchases:** none


### Keel

[App page](https://appshunter.io/ios/app/keel-weight-tracker/id6761394184)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fasting Tracker Pro free?

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

### Is Keel free?

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

### Do Fasting Tracker Pro or Keel have ads?

Neither Fasting Tracker Pro nor Keel shows ads.

### Which is updated more often, Fasting Tracker Pro or Keel?

Fasting Tracker Pro ships an update every 3 weeks, and Keel every 5 months. Most recently, Fasting Tracker Pro was updated on October 25, 2026 and Keel 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.*