# Period Tracker vs Flow

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

Both are free to download. Period Tracker sells 3 in-app purchases, starting at $2.99 per month. Flow asks for nothing beyond the download.

Period Tracker ships an update every 2 months, Flow every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Period Tracker | Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/period-tracker-aura/id6772481381/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 5 MB | 4 MB |
| Requires iOS | 18 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Parag Bafna](https://appshunter.io/developer/1827018897) | [拥军 刘](https://appshunter.io/developer/1896777340) |

## What reviewers say

### Period Tracker

[App page](https://appshunter.io/ios/app/period-tracker-aura/id6772481381)

This app offers a private and secure way to track your menstrual cycle, ovulation, and symptoms. It features a chronological timeline for easy pattern identification and a minimalist design. Premium features include advanced charts and HealthKit integration.

**Highlights:** Privacy-first local data storage, Chronological symptom timeline, Native minimalist design, Cycle history charts, HealthKit integration, Medical PDF exports

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aura Premium (Monthly) | $2.99 | per month |
| Aura Premium (Yearly) | $19.99 | per year |
| Aura Premium (Lifetime) | $49.99 | one-time |


### Flow

[App page](https://appshunter.io/ios/app/flow-period-tracker/id6791552767)

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

**In-app purchases:** none


## Frequently asked questions

### Is Period Tracker free?

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

### Is Flow free?

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

### Do Period Tracker or Flow have ads?

Neither Period Tracker nor Flow shows ads.

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

Period Tracker ships an update every 2 months, and Flow every 3 weeks. Most recently, Period Tracker was updated on October 21, 2026 and Flow on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*