# Night Hark vs BioRithm® DNA profiling

The clearest difference is update cadence: Night Hark at every 3 weeks against BioRithm® DNA profiling's every 10 months. 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.

Night Hark ships an update every 3 weeks, BioRithm® DNA profiling every 10 months. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Night Hark | BioRithm® DNA profiling |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Size | 90 MB | 150 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Bernhard Piskernik](https://appshunter.io/developer/1579227371) | [iGene B.V.](https://appshunter.io/developer/1185895003) |

## What reviewers say

### Night Hark

[App page](https://appshunter.io/ios/app/night-hark-sleep-tracker/id6472816260)

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

**In-app purchases:** none


### BioRithm® DNA profiling

[App page](https://appshunter.io/ios/app/biorithm-dna-profiling/id6503336317)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Night Hark free?

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

### Is BioRithm® DNA profiling free?

BioRithm® DNA profiling is free to download, with no in-app purchases.

### Do Night Hark or BioRithm® DNA profiling have ads?

Neither Night Hark nor BioRithm® DNA profiling shows ads.

### Which is updated more often, Night Hark or BioRithm® DNA profiling?

Night Hark ships an update every 3 weeks, and BioRithm® DNA profiling every 10 months. Most recently, Night Hark was updated on October 30, 2026 and BioRithm® DNA profiling on November 4, 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.*