# CycleSync vs RYTEX

The clearest difference is update cadence: CycleSync at every 2 days against RYTEX's every 6 days. RYTEX's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

CycleSync ships an update every 2 days, RYTEX every 6 days. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CycleSync | RYTEX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 days |
| Size | 2 MB | 52 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Sergei Antropov](https://appshunter.io/developer/1895601114) | [Omer Dulger](https://appshunter.io/developer/6788542300) |

## What reviewers say

### CycleSync

[App page](https://appshunter.io/ios/app/cyclesync/id6764020007)

**Features:** macOS Compatibility

**In-app purchases:** none


### RYTEX

[App page](https://appshunter.io/ios/app/rytex-period-and-cycle-tracker/id6788542298)

**In-app purchases:** none


## Frequently asked questions

### Is CycleSync free?

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

### Is RYTEX free?

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

### Do CycleSync or RYTEX have ads?

Neither CycleSync nor RYTEX shows ads.

### Which is updated more often, CycleSync or RYTEX?

CycleSync ships an update every 2 days, and RYTEX every 6 days. Most recently, CycleSync was updated on October 12, 2026 and RYTEX on October 14, 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.*