# Period Tracker vs Calla

The clearest difference is ratings volume: Period Tracker at 18 against Calla's 4. Calla's advantage is device support. On price, rating, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Period Tracker against 4.8 for Calla. Both are backed by a comparable volume of ratings — 18 and 4 respectively.

## The numbers

| Metric | Period Tracker | Calla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (18 ratings)](https://appshunter.io/ios/app/period-tracker-cycle-log/id6760383501/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/calla-period-tracker/id6761502864/reviews)** |
| Number of ratings | **18** | 4 |
| In-app purchases | No | No |
| Ads | — | No |
| Size | 26 MB | 33 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Blas Prieto](https://appshunter.io/developer/1878084920) | [Roxana Heitz](https://appshunter.io/developer/1890019363) |

## What reviewers say

### Period Tracker

[App page](https://appshunter.io/ios/app/period-tracker-cycle-log/id6760383501)

**In-app purchases:** none


### Calla

[App page](https://appshunter.io/ios/app/calla-period-tracker/id6761502864)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Period Tracker free?

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

### Is Calla free?

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

### Which has better reviews, Period Tracker or Calla?

Calla is rated higher. Period Tracker averages 4.6 out of 5 from 18 ratings, while Calla averages 4.8 from 4 ratings.

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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.*