# Circadacare vs Circadian Rhythm

The clearest difference is in-app purchases: Circadacare at none against Circadian Rhythm's 3. Circadacare also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Circadian Rhythm sells 3 in-app purchases, starting at $4.99 per month. Circadacare asks for nothing beyond the download.

Circadacare ships an update monthly, Circadian Rhythm every 6 weeks. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Circadacare | Circadian Rhythm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (11 ratings)](https://appshunter.io/ios/app/circadian-rhythm-body-clock/id6737418117/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 19 MB | 16 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Circadacare](https://appshunter.io/developer/1751717858) | [Joaquin Marticorena](https://appshunter.io/developer/1774135480) |

## What reviewers say

### Circadacare

[App page](https://appshunter.io/ios/app/circadacare/id6736617536)

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

**In-app purchases:** none


### Circadian Rhythm

[App page](https://appshunter.io/ios/app/circadian-rhythm-body-clock/id6737418117)

Align your daily routines with your body's natural biological clock. Gain personalized insights to improve sleep, boost energy, and enhance focus by understanding your circadian rhythm. Optimize your day with alerts for hormone peaks and sunlight guidance.

**Highlights:** Circadian Rhythm Tracking, Sleep Insights & Trends, Hormone Peak Information, Daily Rhythm Alerts, Mood Tracking, Sunlight Guidance, Personalized Recommendations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circadian PRO | $4.99 | per month |
| Circadian PRO | $29.99 | per year |
| Lifetime Premium | $4.99 | one-time |


## Frequently asked questions

### Is Circadacare free?

Circadacare 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 Circadacare or Circadian Rhythm have ads?

Neither Circadacare nor Circadian Rhythm shows ads.

### Which is updated more often, Circadacare or Circadian Rhythm?

Circadacare ships an update monthly, and Circadian Rhythm every 6 weeks. Most recently, Circadacare was updated on October 18, 2026 and Circadian Rhythm 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.*