# KeyLight PRO vs Lghtmtr

The clearest difference is price: Lghtmtr at Free against KeyLight PRO's $0.99. Lghtmtr also leads on rating (4.5 vs 4.0) and review sentiment (80% vs 44%). KeyLight PRO's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 17.5). On ads and device support there is nothing between them.

Lghtmtr is free to download; KeyLight PRO costs $0.99 up front. Lghtmtr sells 1 one-off in-app purchase. KeyLight PRO asks for nothing beyond the download.

Lghtmtr holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Lghtmtr has 129 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 44% of KeyLight PRO's written reviews are positive against 80% of Lghtmtr's.

KeyLight PRO ships an update every 26 months, Lghtmtr every 4 months. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | KeyLight PRO | Lghtmtr |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/keylight-pro/id635455188/reviews) | **[4.5 (129 ratings)](https://appshunter.io/ios/app/lghtmtr/id956251190/reviews)** |
| Number of ratings | 4 | **129** |
| Positive reviews | 44.4% of reviews | **79.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 4 months** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 25 MB |
| Requires iOS | **10.0** | 17.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Brewer](https://appshunter.io/developer/635455211) | [Alexander Jacque](https://appshunter.io/developer/1164318048) |

## What reviewers say

### KeyLight PRO

[App page](https://appshunter.io/ios/app/keylight-pro/id635455188)

This app simplifies off-camera flash photography by providing calculators for optimal exposure settings. It helps photographers determine ISO, aperture, strobe power, and distance, removing guesswork for both beginners and advanced users. Manage multiple lighting setups and modifiers with its virtual gear bag.

**Highlights:** Exposure calculators (ISO, aperture, strobe power, distance), Key Falloff calculator, Virtual Gear Bag for unlimited strobe configurations, Strobe Library with 100+ pre-loaded models, Support for various light modifiers, Save multiple setups

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

**In-app purchases:** none


### Lghtmtr

[App page](https://appshunter.io/ios/app/lghtmtr/id956251190)

This app provides a minimalist light meter to help users determine ideal exposure settings for photography. It visually demonstrates the relationship between ISO, aperture, and shutter speed, making it intuitive for learning photographers.

**Highlights:** Minimalist light meter, Intuitive exposure settings, Visual feedback, Adjustable ISO, aperture, shutter speed, Camera profile customization, Scene reference with readings

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee tip | $4.99 | one-time |


## Frequently asked questions

### Is KeyLight PRO free?

KeyLight PRO costs $0.99, with no in-app purchases.

### Is Lghtmtr free?

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

### Which has better reviews, KeyLight PRO or Lghtmtr?

Lghtmtr is rated higher. KeyLight PRO averages 4.0 out of 5 from 4 ratings, while Lghtmtr averages 4.5 from 129 ratings.

### Do KeyLight PRO or Lghtmtr have ads?

Neither KeyLight PRO nor Lghtmtr shows ads.

### Which is updated more often, KeyLight PRO or Lghtmtr?

KeyLight PRO ships an update every 26 months, and Lghtmtr every 4 months. Most recently, KeyLight PRO was updated on September 23, 2026 and Lghtmtr on October 1, 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.*