# Fasty vs hæl

The clearest difference is in-app purchases: Fasty at none against hæl's 2. Fasty also leads on iOS requirement (14.0 vs 17.0). hæl's advantage is update cadence (every 6 days vs every 16 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. hæl sells 2 one-off in-app purchases. Fasty asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Fasty against 5.0 for hæl. Both are backed by a comparable volume of ratings — 7 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Fasty ships an update every 16 months, hæl every 6 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Fasty | hæl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (7 ratings)](https://appshunter.io/ios/app/fasty-fasting-tracker/id1596329455/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/hl-fasting-observed/id6778956802/reviews)** |
| Number of ratings | 7 | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 19 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Forest and the Trees, LLC](https://appshunter.io/developer/1596329457) | [KI-GEN STUDIOS LLC](https://appshunter.io/developer/6778956804) |

## What reviewers say

### Fasty

[App page](https://appshunter.io/ios/app/fasty-fasting-tracker/id1596329455)

This app helps users track intermittent fasting by monitoring fasting days and eating periods. It supports weight tracking in both pounds and kilograms and does not collect user data.

**Highlights:** Intermittent fasting tracking, Weight tracking, Fasting day monitoring, Eating period logging, Pound and kilogram support, No data collection

**In-app purchases:** none


### hæl

[App page](https://appshunter.io/ios/app/hl-fasting-observed/id6778956802)

This app acts as a silent observer for your fasting periods and menstrual cycle, reflecting your body's natural rhythms through literary prose. It integrates with Apple Health to provide context-aware insights into your weight and fasting windows, offering a unique, non-prescriptive approach to wellness tracking.

**Highlights:** Fasting timer with literary observations, Menstrual cycle tracking via Apple Health, Phase-aware fasting window adjustments, Literary weight trend analysis, Weekly and monthly retrospective letters, On-device data privacy, Apple Watch and iPad support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-day Trial | Free | one-time |
| the full witness | $19.99 | one-time |


## Frequently asked questions

### Is Fasty free?

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

### Is hæl free?

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

### Which has better reviews, Fasty or hæl?

hæl is rated higher. Fasty averages 4.9 out of 5 from 7 ratings, while hæl averages 5.0 from 7 ratings.

### Do Fasty or hæl have ads?

Neither Fasty nor hæl shows ads.

### Which is updated more often, Fasty or hæl?

Fasty ships an update every 16 months, and hæl every 6 days. Most recently, Fasty was updated on October 24, 2026 and hæl 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.*