# Orbit Cycle vs Flow

The clearest difference is update cadence: Flow at every 3 weeks against Orbit Cycle's every 5 months. Orbit Cycle's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Orbit Cycle ships an update every 5 months, Flow every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Orbit Cycle | Flow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Size | 28 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Archana Pant](https://appshunter.io/developer/1836174047) | [拥军 刘](https://appshunter.io/developer/1896777340) |

## What reviewers say

### Orbit Cycle

[App page](https://appshunter.io/ios/app/orbit-cycle-period-tracker/id6761322680)

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

**In-app purchases:** none


### 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 Orbit Cycle free?

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

### Is Flow free?

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

### Do Orbit Cycle or Flow have ads?

Neither Orbit Cycle nor Flow shows ads.

### Which is updated more often, Orbit Cycle or Flow?

Orbit Cycle ships an update every 5 months, and Flow every 3 weeks. Most recently, Orbit Cycle was updated on October 25, 2026 and Flow on October 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.*