# 尚格GAPM vs Light Meter

The clearest difference is in-app purchases: 尚格GAPM at none against Light Meter's 1. 尚格GAPM also leads on ads (none vs shown) and iOS requirement (9.0 vs 13.0). Light Meter's advantage is update cadence (fortnightly vs every 6 months). On price and device support there is nothing between them.

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

尚格GAPM ships an update every 6 months, Light Meter fortnightly. The most recent releases landed on October 9, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 尚格GAPM | Light Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Fortnightly** |
| Size | 38 MB | 35 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Borui Shangge Software Technology Co., LTD](https://appshunter.io/developer/1662781864) | [hiroki kawamura](https://appshunter.io/developer/1613885005) |

## What reviewers say

### 尚格GAPM

[App page](https://appshunter.io/ios/app/gapm/id1662781862)

**Features:** macOS Compatibility

**In-app purchases:** none


### Light Meter

[App page](https://appshunter.io/ios/app/light-meter-lux-and-brightness/id6784886093)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $12.49 | one-time |


## Frequently asked questions

### Is 尚格GAPM free?

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

### Is Light Meter free?

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

### Do 尚格GAPM or Light Meter have ads?

Light Meter shows ads; 尚格GAPM does not.

### Which is updated more often, 尚格GAPM or Light Meter?

尚格GAPM ships an update every 6 months, and Light Meter fortnightly. Most recently, 尚格GAPM was updated on October 9, 2026 and Light Meter on October 28, 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.*