# Artemis vs Luna

The clearest difference is update cadence: Artemis at every 2 days against Luna's every 2 months. Luna's advantage is iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Artemis sells 2 in-app purchases, starting at $2.99 per month and Luna sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Artemis ships an update every 2 days, Luna every 2 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Artemis | Luna |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/artemis-period-tracker/id6768130305/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | Subscription | — |
| Size | 8 MB | 24 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Taylor Haaff](https://appshunter.io/developer/1896542850) | [Thompson Software LLC](https://appshunter.io/developer/1892404667) |

## What reviewers say

### Artemis

[App page](https://appshunter.io/ios/app/artemis-period-tracker/id6768130305)

This app uses body temperature to accurately detect ovulation and predict your fertility window and menstrual cycle. It handles irregular cycles and offers detailed visualizations, smart notifications, and secure partner sharing. Your data is stored locally for maximum privacy.

**Highlights:** Temperature-based ovulation detection, Cycle predictions that learn your pattern, On-device data storage, Handles irregular cycles, Anomaly awareness, Detailed phase visualizations, Smart notifications

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Artemis Premium (Monthly) | $2.99 | per month |
| Artemis Premium (Annual) | $29.99 | per year |


### Luna

[App page](https://appshunter.io/ios/app/luna-private-cycle-tracker/id6769168539)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Yearly | $39.99 | per year |


## Frequently asked questions

### Is Artemis free?

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

### Is Luna free?

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

### Do Artemis or Luna have ads?

Neither Artemis nor Luna shows ads.

### Which is updated more often, Artemis or Luna?

Artemis ships an update every 2 days, and Luna every 2 months. Most recently, Artemis was updated on October 25, 2026 and Luna on October 25, 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.*