# iLightsIn Sync vs Strong Lumen

The clearest difference is iOS requirement: iLightsIn Sync at 13.0 against Strong Lumen's 15.6. 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.

iLightsIn Sync ships an update every 6 weeks, Strong Lumen monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | iLightsIn Sync | Strong Lumen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Size | 41 MB | 32 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [云江 王](https://appshunter.io/developer/1322295053) | [Strong Lumen Opto Co., Ltd.](https://appshunter.io/developer/1847578322) |

## What reviewers say

### iLightsIn Sync

[App page](https://appshunter.io/ios/app/ilightsin-sync/id6470256252)

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

**In-app purchases:** none


### Strong Lumen

[App page](https://appshunter.io/ios/app/strong-lumen/id6754271831)

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

**In-app purchases:** none


## Frequently asked questions

### Is iLightsIn Sync free?

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

### Is Strong Lumen free?

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

### Do iLightsIn Sync or Strong Lumen have ads?

Neither iLightsIn Sync nor Strong Lumen shows ads.

### Which is updated more often, iLightsIn Sync or Strong Lumen?

iLightsIn Sync ships an update every 6 weeks, and Strong Lumen monthly. Most recently, iLightsIn Sync was updated on October 25, 2026 and Strong Lumen on October 25, 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.*