# Light Meter vs 光量ノート

The clearest difference is in-app purchases: Light Meter at none against 光量ノート's 1. Light Meter also leads on update cadence (fortnightly vs every 2 months) and device support (3 vs 1). 光量ノート's advantage is ads (none vs shown). On price there is nothing between them.

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

Light Meter ships an update fortnightly, 光量ノート every 2 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Light Meter | 光量ノート |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 35 MB | 2 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [hiroki kawamura](https://appshunter.io/developer/1613885005) | [Shuhei Yamamoto](https://appshunter.io/developer/1896725589) |

## What reviewers say

### Light Meter

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

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

**In-app purchases:** none


### 光量ノート

[App page](https://appshunter.io/ios/app/ppfd/id6799558549)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 光量ノート Pro | $4.99 | one-time |


## Frequently asked questions

### Is Light Meter free?

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

### Is 光量ノート free?

光量ノート is free to download, with in-app purchases available.

### Do Light Meter or 光量ノート have ads?

Light Meter shows ads; 光量ノート does not.

### Which is updated more often, Light Meter or 光量ノート?

Light Meter ships an update fortnightly, and 光量ノート every 2 months. Most recently, Light Meter was updated on October 14, 2026 and 光量ノート on October 15, 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.*