# Biorhythm 365days vs Countaroo

The clearest difference is in-app purchases: Countaroo at none against Biorhythm 365days's 1. Countaroo also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Biorhythm 365days sells 1 one-off in-app purchase. Countaroo asks for nothing beyond the download.

Biorhythm 365days ships an update every 2 weeks, Countaroo every 10 days. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Biorhythm 365days | Countaroo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Size | 24 MB | 65 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [akira ohmachi](https://appshunter.io/developer/1338624340) | [Graham Ernst](https://appshunter.io/developer/1613923773) |

## What reviewers say

### Biorhythm 365days

[App page](https://appshunter.io/ios/app/biorhythm-365days/id1562706194)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Countaroo

[App page](https://appshunter.io/ios/app/countaroo/id1613923771)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biorhythm 365days free?

Biorhythm 365days is free to download, with in-app purchases available.

### Is Countaroo free?

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

### Do Biorhythm 365days or Countaroo have ads?

Biorhythm 365days shows ads; Countaroo does not.

### Which is updated more often, Biorhythm 365days or Countaroo?

Biorhythm 365days ships an update every 2 weeks, and Countaroo every 10 days. Most recently, Biorhythm 365days was updated on October 20, 2026 and Countaroo on October 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.*