# Diamond Period Tracker vs Luna

The clearest difference is in-app purchases: Luna at none against Diamond Period Tracker's 2. Luna also leads on update cadence (every 2 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Diamond Period Tracker sells 2 in-app purchases, starting at $9.99 per month. Luna asks for nothing beyond the download.

Diamond Period Tracker ships an update every 4 weeks, Luna every 2 days. The most recent releases landed on September 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Diamond Period Tracker | Luna |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Size | 11 MB | 19 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Elvin tansu Dogan](https://appshunter.io/developer/1893668578) | [Tyler Thompson](https://appshunter.io/developer/1892404667) |

## What reviewers say

### Diamond Period Tracker

[App page](https://appshunter.io/ios/app/diamond-period-tracker/id6765629321)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $69.99 | per year |


### Luna

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Diamond Period Tracker free?

Diamond Period Tracker is free to download, with in-app purchases available.

### Is Luna free?

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

### Do Diamond Period Tracker or Luna have ads?

Neither Diamond Period Tracker nor Luna shows ads.

### Which is updated more often, Diamond Period Tracker or Luna?

Diamond Period Tracker ships an update every 4 weeks, and Luna every 2 days. Most recently, Diamond Period Tracker was updated on September 11, 2026 and Luna on September 20, 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.*