# KeyLight PRO vs Light Meter Ultra

The clearest difference is price: Light Meter Ultra at Free against KeyLight PRO's $0.99. Light Meter Ultra also leads on rating (4.7 vs 4.0) and update cadence (every 8 days vs every 26 months). KeyLight PRO's advantage is in-app purchases (none vs 6) and review sentiment (44% vs 36%). On ads and device support there is nothing between them.

Light Meter Ultra is free to download; KeyLight PRO costs $0.99 up front. Light Meter Ultra sells 3 in-app purchases, starting at $7.99 per 7 days. KeyLight PRO asks for nothing beyond the download.

Light Meter Ultra holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Light Meter Ultra has 738 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 44% of KeyLight PRO's written reviews are positive against 36% of Light Meter Ultra's, so the app with the better star average is not the one people write more warmly about.

KeyLight PRO ships an update every 26 months, Light Meter Ultra every 8 days. The most recent releases landed on September 23, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | KeyLight PRO | Light Meter Ultra |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/keylight-pro/id635455188/reviews) | **[4.7 (738 ratings)](https://appshunter.io/ios/app/light-meter-ultra/id1558108173/reviews)** |
| Number of ratings | 4 | **738** |
| Positive reviews | **44.4% of reviews** | 36.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 81 MB |
| Requires iOS | **10.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Brewer](https://appshunter.io/developer/635455211) | [Ultrafine](https://appshunter.io/developer/1558108175) |

## 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


### Light Meter Ultra

[App page](https://appshunter.io/ios/app/light-meter-ultra/id1558108173)

This app provides precise light metering for film photography, eliminating the need for external hardware. It offers various metering modes and customizable profiles to ensure perfect exposures for manual cameras. Advanced features like reciprocity failure correction are available with a PRO plan.

**Highlights:** Aperture Priority Metering, Shutter Priority Metering, Exposure Priority Metering, Customizable ISO, Shutter Speed, Aperture, Exposure Compensation, Reciprocity Failure Correction, Custom Camera Profiles

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Light Meter | $7.99 | per 7 days |
| Light Meter | $11.99 | per month |
| Light Meter | $39.99 | per year |

**What reviewers like**

- 🚀 Accurate and fast metering
- 👍 Clean and intuitive interface
- 💡 Customizable settings (aperture, shutter, ISO)
- 🔍 Useful for analog/film photography

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔒 Locked features behind paywall
- 🐛 Unreliable performance in low-light conditions
- 📱 Requires internet connection for full functionality

**Reported bugs**

- Camera integration issues causing failed exposures
- Inconsistent metering results compared to standalone meters

**Requested features**

- Offline mode for remote shooting
- Wider aperture and shutter speed range
- Support for more camera/film types
- Customizable exposure bias/compensation


## Frequently asked questions

### Is KeyLight PRO free?

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

### Is Light Meter Ultra free?

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

### Which has better reviews, KeyLight PRO or Light Meter Ultra?

Light Meter Ultra is rated higher. KeyLight PRO averages 4.0 out of 5 from 4 ratings, while Light Meter Ultra averages 4.7 from 738 ratings.

### Do KeyLight PRO or Light Meter Ultra have ads?

Neither KeyLight PRO nor Light Meter Ultra shows ads.

### Which is updated more often, KeyLight PRO or Light Meter Ultra?

KeyLight PRO ships an update every 26 months, and Light Meter Ultra every 8 days. Most recently, KeyLight PRO was updated on September 23, 2026 and Light Meter Ultra on October 23, 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.*