# Zero Network vs Circadian Rhythm

The clearest difference is in-app purchases: Zero Network at none against Circadian Rhythm's 5. Zero Network also leads on update cadence (every 6 days vs every 3 months). Circadian Rhythm's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Circadian Rhythm sells 5 in-app purchases, starting at $3.99 per 7 days. Zero Network asks for nothing beyond the download.

Zero Network ships an update every 6 days, Circadian Rhythm every 3 months. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Zero Network | Circadian Rhythm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (6 ratings)](https://appshunter.io/ios/app/circadian-rhythm-dawnpal/id6499448034/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 50 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Adeel Aslam](https://appshunter.io/developer/1738256575) | [Ingo Augsten](https://appshunter.io/developer/1720651715) |

## What reviewers say

### Zero Network

[App page](https://appshunter.io/ios/app/zero-network/id6480126269)

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

**In-app purchases:** none


### Circadian Rhythm

[App page](https://appshunter.io/ios/app/circadian-rhythm-dawnpal/id6499448034)

This app helps you align with natural daylight cycles for better sleep and increased energy. It uses your location to determine sunrise times and calculates an ideal bedtime based on your desired sleep duration, promoting a healthier start to your day.

**Highlights:** Aligns with natural sun cycle, Calculates ideal bedtime, Detects location for sunrise, Promotes better sleep, Increases daily energy

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| us-en | $3.99 | per 7 days |
| Yearly Plan | $19.99 | per year |
| Lifetime - vote a feature | $3.99 | one-time |
| Lifetime - "your" feature | $17.99 | one-time |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Zero Network free?

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

### Is Circadian Rhythm free?

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

### Do Zero Network or Circadian Rhythm have ads?

Neither Zero Network nor Circadian Rhythm shows ads.

### Which is updated more often, Zero Network or Circadian Rhythm?

Zero Network ships an update every 6 days, and Circadian Rhythm every 3 months. Most recently, Zero Network was updated on November 8, 2026 and Circadian Rhythm 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.*