# Night Hark vs Longevity Arc

The clearest difference is in-app purchases: Night Hark at none against Longevity Arc's 2. Longevity Arc's advantage is update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Longevity Arc sells 2 in-app purchases, starting at $2.99 per month. Night Hark asks for nothing beyond the download.

Night Hark ships an update monthly, Longevity Arc every 3 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Night Hark | Longevity Arc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 89 MB | 40 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Piskernik](https://appshunter.io/developer/1579227371) | [Radoslaw Jozefowicz](https://appshunter.io/developer/1859278240) |

## 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


### Longevity Arc

[App page](https://appshunter.io/ios/app/longevity-arc/id6766045106)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Lifetime Pro | $9.99 | one-time |


## Frequently asked questions

### Is Night Hark free?

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

### Is Longevity Arc free?

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

### Do Night Hark or Longevity Arc have ads?

Neither Night Hark nor Longevity Arc shows ads.

### Which is updated more often, Night Hark or Longevity Arc?

Night Hark ships an update monthly, and Longevity Arc every 3 days. Most recently, Night Hark was updated on October 16, 2026 and Longevity Arc on October 7, 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.*