# Full Moon Flow vs Niio

The clearest difference is in-app purchases: Full Moon Flow at none against Niio's 2. Full Moon Flow also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Niio sells 2 in-app purchases, starting at $2.99 per month. Full Moon Flow asks for nothing beyond the download.

## The numbers

| Metric | Full Moon Flow | Niio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | — |
| Size | 52 MB | 31 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Delellis](https://appshunter.io/developer/6797146548) | [QUANG NINH BUI](https://appshunter.io/developer/6794876343) |

## 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


### Niio

[App page](https://appshunter.io/ios/app/niio-period-tracker/id6797809185)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Niio: Period Tracker | $2.99 | per month |
| Niio: Period Tracker | $12.99 | per year |


## Frequently asked questions

### Is Full Moon Flow free?

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

### Is Niio free?

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

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

Niio shows ads; Full Moon Flow does not.

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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.*