# Circadacare vs BioClock

The clearest difference is update cadence: BioClock at every 10 days against Circadacare's monthly. 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.

Circadacare ships an update monthly, BioClock every 10 days. The most recent releases landed on September 14, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Circadacare | BioClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Size | 19 MB | 2 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Circadacare](https://appshunter.io/developer/1751717858) | [Jakub Tencl](https://appshunter.io/developer/1560908217) |

## What reviewers say

### Circadacare

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

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

**In-app purchases:** none


### BioClock

[App page](https://appshunter.io/ios/app/bioclock/id6761010883)

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

**In-app purchases:** none


## Frequently asked questions

### Is Circadacare free?

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

### Is BioClock free?

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

### Do Circadacare or BioClock have ads?

Neither Circadacare nor BioClock shows ads.

### Which is updated more often, Circadacare or BioClock?

Circadacare ships an update monthly, and BioClock every 10 days. Most recently, Circadacare was updated on September 14, 2026 and BioClock on September 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.*