# Flow State Cycle vs Diamond Period Tracker

The clearest difference is in-app purchases: Flow State Cycle at none against Diamond Period Tracker's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Diamond Period Tracker sells 2 in-app purchases, starting at $9.99 per month. Flow State Cycle asks for nothing beyond the download.

Flow State Cycle ships an update every 3 weeks, Diamond Period Tracker every 4 weeks. The most recent releases landed on September 18, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Flow State Cycle | Diamond Period Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flow-state-cycle/id6762103850/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 33 MB | 11 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Brett East](https://appshunter.io/developer/1892495827) | [Elvin tansu Dogan](https://appshunter.io/developer/1893668578) |

## What reviewers say

### Flow State Cycle

[App page](https://appshunter.io/ios/app/flow-state-cycle/id6762103850)

This private period tracker logs your cycle with a single tap and uses your data for smart predictions. It offers symptom and mood tracking, cycle insights, and doctor-ready reports. Your health data stays on your device, ensuring complete privacy.

**Highlights:** Smart cycle predictions, Symptom and mood logging, Cycle insights and patterns, Doctor-ready PDF reports, Health ecosystem sync, CSV data export, Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


### Diamond Period Tracker

[App page](https://appshunter.io/ios/app/diamond-period-tracker/id6765629321)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $69.99 | per year |


## Frequently asked questions

### Is Flow State Cycle free?

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

### Is Diamond Period Tracker free?

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

### Do Flow State Cycle or Diamond Period Tracker have ads?

Neither Flow State Cycle nor Diamond Period Tracker shows ads.

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

Flow State Cycle ships an update every 3 weeks, and Diamond Period Tracker every 4 weeks. Most recently, Flow State Cycle was updated on September 18, 2026 and Diamond Period Tracker on September 11, 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.*