# Lightmate vs Luminosys

The clearest difference is ads: Lightmate at none against Luminosys's shown. Lightmate also leads on update cadence (every 5 weeks vs every 19 months) and ratings volume (79 vs 7). Luminosys's advantage is rating (4.4 vs 4.1). On price, review sentiment, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Luminosys holds the better App Store score, 4.4 against 4.1. That said, the two scores are not equally well evidenced: Lightmate has 79 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 83% of Lightmate's written reviews are positive against 75% of Luminosys's, so the app with the better star average is not the one people write more warmly about.

Lightmate ships an update every 5 weeks, Luminosys every 19 months. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Lightmate | Luminosys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (79 ratings)](https://appshunter.io/ios/app/lightmate/id791590935/reviews) | **[4.4 (7 ratings)](https://appshunter.io/ios/app/luminosys-light-meter/id6476405389/reviews)** |
| Number of ratings | **79** | 7 |
| Positive reviews | **83.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 19 months |
| Monetization | **Free** | Ad-supported |
| Size | 8 MB | 3 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Luis Laugga](https://appshunter.io/developer/791590938) | [Melissa Zwick](https://appshunter.io/developer/1616726350) |

## What reviewers say

### Lightmate

[App page](https://appshunter.io/ios/app/lightmate/id791590935)

This app functions as a light meter for photographers, offering a clear and intuitive interface. It supports aperture and shutter priority modes, with customizable EV scales and the ability to use both front and back cameras for measurements.

**Highlights:** Aperture priority mode, Shutter priority mode, Multiple EV scales, Back and front camera support, Tap-to-measure exposure

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive interface
- 🚀 Fast and accurate metering
- 💰 Free to use, no ads
- ✨ Minimalist and clean design
- 📸 Great for film photography

**What reviewers complain about**

- 🤏 Small text size
- ❓ Confusing for beginners
- ⚠️ Values change too quickly
- 🎛️ Clumsy to use
- 🚫 No whole scene average reading

**Reported bugs**

- F stop disappeared
- Aperture reading disappeared
- Not working on iOS 11
- Link for camera association not working
- App requests to open association with camera

**Requested features**

- Add space between S, A, I
- Lock ISO values
- Add whole scene average reading
- Add tutorial/demo video for beginners
- Add dedicated screenshot button


### Luminosys

[App page](https://appshunter.io/ios/app/luminosys-light-meter/id6476405389)

Accurately measure ambient light levels in Lux or Foot Candles using your phone's camera. This tool is ideal for photography, comparing light sources, or indoor gardening. It's designed for ease of use and provides precise readings.

**Highlights:** Measures light in Lux, Measures light in Foot Candles (FC), Uses phone camera for accuracy, Easy to use interface, Suitable for photography, Useful for indoor gardening

**In-app purchases:** none


## Frequently asked questions

### Is Lightmate free?

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

### Is Luminosys free?

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

### Which has better reviews, Lightmate or Luminosys?

Luminosys is rated higher. Lightmate averages 4.1 out of 5 from 79 ratings, while Luminosys averages 4.4 from 7 ratings.

### Do Lightmate or Luminosys have ads?

Luminosys shows ads; Lightmate does not.

### Which is updated more often, Lightmate or Luminosys?

Lightmate ships an update every 5 weeks, and Luminosys every 19 months. Most recently, Lightmate was updated on October 6, 2026 and Luminosys on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*