# Lune Line Cycle Tracker vs Calla

The clearest difference is rating: Lune Line Cycle Tracker at 5.0 against Calla's 4.8. Calla's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Lune Line Cycle 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 | Lune Line Cycle Tracker | Calla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lune-line-cycle-tracker/id6737253593/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/calla-period-tracker/id6761502864/reviews) |
| Number of ratings | 1 | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free | Free |
| Size | 75 MB | 33 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Sexology Systems LLC](https://appshunter.io/developer/1775616375) | [Roxana Heitz](https://appshunter.io/developer/1890019363) |

## What reviewers say

### Lune Line Cycle Tracker

[App page](https://appshunter.io/ios/app/lune-line-cycle-tracker/id6737253593)

Easily log your menstrual cycle, receive updated predictions, and get gentle reminders to stay prepared. This private tracker helps reduce the monthly mental load. It is not a medical device and should not be used for contraception.

**Highlights:** Track period dates, View cycle stage, Predict upcoming periods, Receive period reminders, Optional PIN for privacy, Browse period care essentials

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

**In-app purchases:** none


### Calla

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

This app helps teens understand their menstrual cycles with privacy-focused tracking. It learns individual patterns for accurate predictions and allows logging of various symptoms to connect with cycle phases. Optional parent sharing provides a simple wellness update without revealing sensitive data.

**Highlights:** Personalized cycle predictions, Symptom and mood logging, Age-appropriate cycle insights, Prep-day period reminders, Optional parent wellness sharing, Privacy-first data storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lune Line Cycle Tracker free?

Lune Line Cycle 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, Lune Line Cycle Tracker or Calla?

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

### Do Lune Line Cycle Tracker or Calla have ads?

Neither Lune Line 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.*