# G vs LUX Meter

The clearest difference is update cadence: LUX Meter at every 3 days against G's every 3 weeks. LUX Meter also leads on iOS requirement (17.0 vs 26.2). 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.

G ships an update every 3 weeks, LUX Meter every 3 days. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | G | LUX Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/lux-meter-light-meter/id6783321327/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 14 MB | 3 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MASAKAZU KUROKI](https://appshunter.io/developer/1896624398) | [Yannick Binay](https://appshunter.io/developer/6783321329) |

## What reviewers say

### G

[App page](https://appshunter.io/ios/app/g-trace/id6771170973)

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

**In-app purchases:** none


### LUX Meter

[App page](https://appshunter.io/ios/app/lux-meter-light-meter/id6783321327)

This app measures ambient light levels in lux or foot-candles using your iPhone camera. It provides instant feedback on whether a space is too dim, comfortable, or bright enough for various tasks and offers calibration options.

**Highlights:** Lux and foot-candle readings, Lighting target presets, Live brightness scale, Hold mode for measurements, Session min, average, and max, Calibration against trusted value, Private on-device metering

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

**In-app purchases:** none


## Frequently asked questions

### Is G free?

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

### Is LUX Meter free?

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

### Do G or LUX Meter have ads?

Neither G nor LUX Meter shows ads.

### Which is updated more often, G or LUX Meter?

G ships an update every 3 weeks, and LUX Meter every 3 days. Most recently, G was updated on October 4, 2026 and LUX Meter 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.*