# Luma vs Light Meter

The clearest difference is in-app purchases: Light Meter at none against Luma's 1. Light Meter also leads on ads (none vs shown) and iOS requirement (15 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Luma sells 1 one-off in-app purchase. Light Meter asks for nothing beyond the download.

Luma ships an update every 3 days, Light Meter every 2 days. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Luma | Light Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 10 MB | 31 MB |
| Requires iOS | 18.0 | **15** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [tomoki swanson](https://appshunter.io/developer/1579832044) | [Dharmik Ghori](https://appshunter.io/developer/6809687615) |

## What reviewers say

### Luma

[App page](https://appshunter.io/ios/app/luma-brightness-widget/id6760693098)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示 | $0.99 | one-time |


### Light Meter

[App page](https://appshunter.io/ios/app/light-meter-lux/id6809687613)

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

**In-app purchases:** none


## Frequently asked questions

### Is Luma free?

Luma is free to download, with in-app purchases available.

### Is Light Meter free?

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

### Do Luma or Light Meter have ads?

Luma shows ads; Light Meter does not.

### Which is updated more often, Luma or Light Meter?

Luma ships an update every 3 days, and Light Meter every 2 days. Most recently, Luma was updated on October 1, 2026 and Light Meter on October 9, 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.*