# PHASES. Cycle Tracker & Diary vs Rhythmus

The clearest difference is update cadence: Rhythmus at daily against PHASES. Cycle Tracker & Diary's every 2 months. Rhythmus also leads on iOS requirement (15.0 vs 26.2). 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.

PHASES. Cycle Tracker & Diary ships an update every 2 months, Rhythmus daily. The most recent releases landed on September 24, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | PHASES. Cycle Tracker & Diary | Rhythmus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Size | 2 MB | 9 MB |
| Requires iOS | 26.2 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [myNFP GmbH](https://appshunter.io/developer/466385603) | [Patrick Sarpen](https://appshunter.io/developer/6804829454) |

## What reviewers say

### PHASES. Cycle Tracker & Diary

[App page](https://appshunter.io/ios/app/phases-cycle-tracker-and-diary/id6776305097)

**In-app purchases:** none


### Rhythmus

[App page](https://appshunter.io/ios/app/rhythmus-cycle-syncing/id6804829452)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PHASES. Cycle Tracker & Diary free?

PHASES. Cycle Tracker & Diary is free to download, with no in-app purchases.

### Is Rhythmus free?

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

### Do PHASES. Cycle Tracker & Diary or Rhythmus have ads?

Neither PHASES. Cycle Tracker & Diary nor Rhythmus shows ads.

### Which is updated more often, PHASES. Cycle Tracker & Diary or Rhythmus?

PHASES. Cycle Tracker & Diary ships an update every 2 months, and Rhythmus daily. Most recently, PHASES. Cycle Tracker & Diary was updated on September 24, 2026 and Rhythmus on September 14, 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.*