# hæl vs HerRhythm

The clearest difference is in-app purchases: HerRhythm at none against hæl's 2. hæl's advantage is ads (none vs shown) and device support (3 vs 1). On price, update cadence and iOS requirement there is nothing between them.

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

hæl ships an update every 6 days, HerRhythm every 9 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | hæl | HerRhythm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/hl-fasting-observed/id6778956802/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 17 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [KI-GEN STUDIOS LLC](https://appshunter.io/developer/6778956804) | [Jaspal Singh](https://appshunter.io/developer/1844991395) |

## What reviewers say

### 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 |


### HerRhythm

[App page](https://appshunter.io/ios/app/herrhythm-period-tracker/id6791934133)

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

**In-app purchases:** none


## Frequently asked questions

### Is hæl free?

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

### Is HerRhythm free?

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

### Do hæl or HerRhythm have ads?

HerRhythm shows ads; hæl does not.

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

hæl ships an update every 6 days, and HerRhythm every 9 days. Most recently, hæl was updated on October 24, 2026 and HerRhythm on October 19, 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.*