# Flow State Cycle vs Luna

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

Both are free to download. Luna sells 2 in-app purchases, starting at $6.99 per month. Flow State Cycle asks for nothing beyond the download.

Flow State Cycle ships an update every 2 weeks, Luna every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Flow State Cycle | Luna |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/flow-state-cycle/id6762103850/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 54 MB | 24 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Brett East](https://appshunter.io/developer/1892495827) | [Thompson Software LLC](https://appshunter.io/developer/1892404667) |

## 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, Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Luna

[App page](https://appshunter.io/ios/app/luna-private-cycle-tracker/id6769168539)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Yearly | $39.99 | per year |


## Frequently asked questions

### Is Flow State Cycle free?

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

### Is Luna free?

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

### Do Flow State Cycle or Luna have ads?

Neither Flow State Cycle nor Luna shows ads.

### Which is updated more often, Flow State Cycle or Luna?

Flow State Cycle ships an update every 2 weeks, and Luna every 2 months. Most recently, Flow State Cycle was updated on November 5, 2026 and Luna 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.*