# Full Moon Flow vs Ovaa

The clearest difference is in-app purchases: Full Moon Flow at none against Ovaa's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ovaa sells 2 in-app purchases, starting at $9.99 per month. Full Moon Flow asks for nothing beyond the download.

Full Moon Flow ships an update every 9 days, Ovaa every 6 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Full Moon Flow | Ovaa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Size | 52 MB | 11 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Daniel Delellis](https://appshunter.io/developer/6797146548) | [ActMobile Labs LLC](https://appshunter.io/developer/6793448585) |

## What reviewers say

### Full Moon Flow

[App page](https://appshunter.io/ios/app/full-moon-flow/id6797146546)

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

**In-app purchases:** none


### Ovaa

[App page](https://appshunter.io/ios/app/ovaa-period-tracker/id6807972832)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ovaa Monthly | $9.99 | per month |
| Premium Yearly | $59.99 | per year |


## Frequently asked questions

### Is Full Moon Flow free?

Full Moon Flow is free to download, with no in-app purchases.

### Is Ovaa free?

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

### Do Full Moon Flow or Ovaa have ads?

Neither Full Moon Flow nor Ovaa shows ads.

### Which is updated more often, Full Moon Flow or Ovaa?

Full Moon Flow ships an update every 9 days, and Ovaa every 6 days. Most recently, Full Moon Flow was updated on October 8, 2026 and Ovaa on October 10, 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.*