# Period or Not vs Full Moon Flow

The clearest difference is update cadence: Full Moon Flow at every 9 days against Period or Not's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

Period or Not ships an update every 3 weeks, Full Moon Flow every 9 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Period or Not | Full Moon Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/period-or-not/id6737966705/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 44 MB | 52 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 9+ | 4+ |
| Developer | [Antonija Pek](https://appshunter.io/developer/1099467112) | [Daniel Delellis](https://appshunter.io/developer/6797146548) |

## What reviewers say

### Period or Not

[App page](https://appshunter.io/ios/app/period-or-not/id6737966705)

This private period tracker stores all your cycle data locally on your device, with no account or server required. It learns your unique cycle patterns to provide accurate predictions and offers optional encrypted backups to your own cloud storage.

**Highlights:** Local data storage, No account required, Learns personal cycle patterns, Predicts period and ovulation days, Optional encrypted iCloud backup, Data export to file

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

**In-app purchases:** none


### Full Moon Flow

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Period or Not free?

Period or Not is free to download, with no in-app purchases.

### Is Full Moon Flow free?

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

### Do Period or Not or Full Moon Flow have ads?

Neither Period or Not nor Full Moon Flow shows ads.

### Which is updated more often, Period or Not or Full Moon Flow?

Period or Not ships an update every 3 weeks, and Full Moon Flow every 9 days. Most recently, Period or Not was updated on November 4, 2026 and Full Moon Flow on October 31, 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.*