# CycleSync vs Lumi

The clearest difference is iOS requirement: CycleSync at 17.6 against Lumi's 26.0. On price, update cadence, 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.

CycleSync ships an update every 2 days, Lumi every 4 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CycleSync | Lumi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 2 MB | 6 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Sergei Antropov](https://appshunter.io/developer/1895601114) | [Mikhail Sharshov](https://appshunter.io/developer/6811785953) |

## What reviewers say

### CycleSync

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Lumi

[App page](https://appshunter.io/ios/app/lumi-cycle-calendar/id6811785951)

**In-app purchases:** none


## Frequently asked questions

### Is CycleSync free?

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

### Is Lumi free?

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

### Do CycleSync or Lumi have ads?

Neither CycleSync nor Lumi shows ads.

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

CycleSync ships an update every 2 days, and Lumi every 4 days. Most recently, CycleSync was updated on October 12, 2026 and Lumi on October 10, 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.*