# FemLogger Cycle Tracker vs Calla

The clearest difference is in-app purchases: FemLogger Cycle Tracker at none against Calla's 2. FemLogger Cycle Tracker also leads on iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Calla sells 2 in-app purchases, starting at $7.99 per month. FemLogger Cycle Tracker asks for nothing beyond the download.

## The numbers

| Metric | FemLogger Cycle Tracker | Calla |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 37 MB | 69 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Full Measure ICT](https://appshunter.io/developer/6783380839) | [Arman Malkhasyan](https://appshunter.io/developer/6804423803) |

## What reviewers say

### FemLogger Cycle Tracker

[App page](https://appshunter.io/ios/app/femlogger-cycle-tracker/id6783846124)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calla

[App page](https://appshunter.io/ios/app/calla-perimenopause-tracker/id6804423801)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calla Pro - Monthly | $7.99 | per month |
| Calla Pro - Yearly | $39.99 | per year |


## Frequently asked questions

### Is FemLogger Cycle Tracker free?

FemLogger Cycle Tracker is free to download, with no in-app purchases.

### Is Calla free?

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

### Do FemLogger Cycle Tracker or Calla have ads?

Neither FemLogger Cycle Tracker nor Calla shows ads.

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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.*