# Flow Fasting Tracker vs Cycluna

The clearest difference is in-app purchases: Cycluna at none against Flow Fasting Tracker's 2. Flow Fasting Tracker's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Flow Fasting Tracker sells 2 in-app purchases, starting at $7.99 per month. Cycluna asks for nothing beyond the download.

Flow Fasting Tracker ships an update every 10 days, Cycluna weekly. Both last shipped on September 28, 2026.

## The numbers

| Metric | Flow Fasting Tracker | Cycluna |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Size | 16 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kristina Kozicynaite](https://appshunter.io/developer/1882882099) | [Seema Jagadeesh](https://appshunter.io/developer/6794596522) |

## What reviewers say

### Flow Fasting Tracker

[App page](https://appshunter.io/ios/app/flow-fasting-tracker/id6776109275)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $7.99 | per month |
| Annual | $39.99 | per year |


### Cycluna

[App page](https://appshunter.io/ios/app/cycluna/id6797498554)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flow Fasting Tracker free?

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

### Is Cycluna free?

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

### Do Flow Fasting Tracker or Cycluna have ads?

Neither Flow Fasting Tracker nor Cycluna shows ads.

### Which is updated more often, Flow Fasting Tracker or Cycluna?

Flow Fasting Tracker ships an update every 10 days, and Cycluna weekly. Most recently, Flow Fasting Tracker was updated on September 28, 2026 and Cycluna on September 28, 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.*