# illumeter vs Shutter Button

The clearest difference is in-app purchases: illumeter at none against Shutter Button's 2. illumeter also leads on ratings volume (11 vs 1). Shutter Button's advantage is rating (5.0 vs 4.6) and update cadence (every 5 days vs every 2 weeks). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Shutter Button sells 2 one-off in-app purchases. illumeter asks for nothing beyond the download.

Shutter Button holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: illumeter has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

illumeter ships an update every 2 weeks, Shutter Button every 5 days. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | illumeter | Shutter Button |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (11 ratings)](https://appshunter.io/ios/app/illumeter/id6474086258/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shutter-button-a-light-meter/id6742120759/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free | Free |
| Size | 12 MB | 4 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seunghun Yang](https://appshunter.io/developer/1586944242) | [SEUNGHYUK CHOI](https://appshunter.io/developer/1796943412) |

## What reviewers say

### illumeter

[App page](https://appshunter.io/ios/app/illumeter/id6474086258)

This app functions as a portable light meter, allowing users to measure exposure values like aperture, shutter speed, and ISO. It offers features for logging shots with location and settings, and provides customization options for a personalized user experience.

**Highlights:** Exposure measurement (Aperture, Shutter Speed, ISO), Tap-to-focus exposure lock, Exposure compensation, Frame logging with location and settings, List and map view of logged frames, Customizable settings and appearance

**Features:** macOS Compatibility

**In-app purchases:** none


### Shutter Button

[App page](https://appshunter.io/ios/app/shutter-button-a-light-meter/id6742120759)

This app functions as a Bluetooth camera remote, offering an integrated exposure meter and a LiDAR-based rangefinder. It supports various exposure modes and metering methods, along with zoom and frameline features for precise shot composition. Additional modes include bulb and timer functions for extended shooting capabilities.

**Highlights:** Bluetooth camera remote, Exposure meter (AV, TV, M modes), LiDAR rangefinder, Exposure compensation, Framelines for various formats, Bulb and timer modes, Instax Style Log feature

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Profile, Additional Features | $3.99 | one-time |
| Remote Release Activation | $10.99 | one-time |


## Frequently asked questions

### Is illumeter free?

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

### Is Shutter Button free?

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

### Which has better reviews, illumeter or Shutter Button?

Shutter Button is rated higher. illumeter averages 4.6 out of 5 from 11 ratings, while Shutter Button averages 5.0 from 1 ratings.

### Do illumeter or Shutter Button have ads?

Neither illumeter nor Shutter Button shows ads.

### Which is updated more often, illumeter or Shutter Button?

illumeter ships an update every 2 weeks, and Shutter Button every 5 days. Most recently, illumeter was updated on October 7, 2026 and Shutter Button on October 3, 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.*