# Period Tracker vs Calla

The clearest difference is in-app purchases: Calla at none against Period Tracker's 4. Calla also leads on ratings volume (4 vs 1). Period Tracker's advantage is rating (5.0 vs 4.8). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Period Tracker sells 4 in-app purchases, starting at $4.99 per month. Calla asks for nothing beyond the download.

Period Tracker holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

## The numbers

| Metric | Period Tracker | Calla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/period-tracker-ovulation-flow/id6761469191/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/calla-period-tracker/id6761502864/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 95 MB | 33 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 12+ |
| Developer | [Ankit Sutariya](https://appshunter.io/developer/1186136999) | [Roxana Heitz](https://appshunter.io/developer/1890019363) |

## What reviewers say

### Period Tracker

[App page](https://appshunter.io/ios/app/period-tracker-ovulation-flow/id6761469191)

Track your menstrual cycle, predict ovulation, and monitor pregnancy progress. Offers daily wellness tools, guided exercises, and an AI chat assistant for personalized insights and support.

**Highlights:** Menstrual cycle prediction, Ovulation and fertile window calculator, Pregnancy week-by-week updates, Symptom and mood logging, AI chat assistant for insights, Guided breathing exercises, Customizable reminders

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeriodTracker Monthly Plan | $4.99 | per month |
| PeriodTracker Offer | $10.99 | per 6 months |
| PeriodTracker Yearly Trial | $19.00 | per year |
| PeriodTracker Yearly | $19.00 | per year |


### 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 in-app purchases available.

### Is Calla free?

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

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

Period Tracker is rated higher. Period Tracker averages 5.0 out of 5 from 1 ratings, while Calla averages 4.8 from 4 ratings.

### Do Period Tracker or Calla have ads?

Neither Period 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.*