# Flow vs Period Tracker | Mooni

The clearest difference is in-app purchases: Flow at none against Period Tracker | Mooni's 12. Flow also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). Period Tracker | Mooni's advantage is update cadence (every 2 weeks vs every 20 months). On price and ads there is nothing between them.

Both are free to download. Period Tracker | Mooni sells 12 in-app purchases, starting at $4.99 per month. Flow asks for nothing beyond the download.

Flow ships an update every 20 months, Period Tracker | Mooni every 2 weeks. The most recent releases landed on October 12, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Flow | Period Tracker | Mooni |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (25 ratings)](https://appshunter.io/ios/app/period-tracker-mooni/id6445890188/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 2 weeks** |
| Monetization | — | Subscription |
| Size | 23 MB | 115 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [ALLIED SYSTEM CO.,LTD.](https://appshunter.io/developer/1077613622) | [KODE LLC](https://appshunter.io/developer/1628314313) |

## What reviewers say

### Flow

[App page](https://appshunter.io/ios/app/flow/id1199799265)

**Features:** macOS Compatibility

**In-app purchases:** none


### Period Tracker | Mooni

[App page](https://appshunter.io/ios/app/period-tracker-mooni/id6445890188)

Track your menstrual cycle, predict ovulation, and log symptoms like mood and PMS. Plan pregnancies or prevent them with fertile window insights. Your health data is kept anonymous and secure.

**Highlights:** Period cycle tracking, Ovulation prediction, Fertile window planning, Symptom and mood diary, Anonymized data protection, Intuitive interface

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mooni 1 month access | $4.99 | per month |
| Mooni 1 month access | $9.99 | per month |
| Mooni 1 month access | $9.99 | per month |
| Mooni 6 months access | $14.99 | per 6 months |
| Mooni 1 year access | $19.99 | per year |
| Mooni 1 year access | $29.99 | per year |
| Mooni 6 months access | $29.99 | per 6 months |
| Mooni 6 months access | $29.99 | per 6 months |
| Mooni 1 year access | $35.99 | per year |
| Mooni 1 year access | $39.99 | per year |
| Special offer for Mooni | $44.99 | per year |
| Mooni 1 year access | $49.99 | per year |


## Frequently asked questions

### Is Flow free?

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

### Is Period Tracker | Mooni free?

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

### Do Flow or Period Tracker | Mooni have ads?

Neither Flow nor Period Tracker | Mooni shows ads.

### Which is updated more often, Flow or Period Tracker | Mooni?

Flow ships an update every 20 months, and Period Tracker | Mooni every 2 weeks. Most recently, Flow was updated on October 12, 2026 and Period Tracker | Mooni on September 24, 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.*