# Lghtmtr vs Simple Negative Image

The clearest difference is in-app purchases: Simple Negative Image at none against Lghtmtr's 1. Simple Negative Image also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.5). Lghtmtr's advantage is ads (none vs shown) and review sentiment (80% vs 56%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Lghtmtr sells 1 one-off in-app purchase. Simple Negative Image asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Lghtmtr against 4.5 for Simple Negative Image. Both are backed by a comparable volume of ratings — 129 and 115 respectively. Written reviews are what separate them: 80% of Lghtmtr's written reviews are positive against 56% of Simple Negative Image's.

Lghtmtr ships an update every 4 months, Simple Negative Image every 2 months. The most recent releases landed on October 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Lghtmtr | Simple Negative Image |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (129 ratings)](https://appshunter.io/ios/app/lghtmtr/id956251190/reviews) | [4.5 (115 ratings)](https://appshunter.io/ios/app/simple-negative-image/id6444569227/reviews) |
| Number of ratings | **129** | 115 |
| Positive reviews | **79.7% of reviews** | 56.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 25 MB | 34 MB |
| Requires iOS | 17.5 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Jacque](https://appshunter.io/developer/1164318048) | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) |

## What reviewers say

### 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 |


### Simple Negative Image

[App page](https://appshunter.io/ios/app/simple-negative-image/id6444569227)

Easily invert image colors to create unique artistic effects. This tool allows for the inversion of negatives and positives, transforming ordinary photos into tasteful art-like creations. Perfect for users seeking straightforward image processing.

**Highlights:** Invert image colors, Create unique images, Generate art-like visuals, Process images easily, Invert negatives and positives

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

**In-app purchases:** none


## Frequently asked questions

### Is Lghtmtr free?

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

### Is Simple Negative Image free?

Simple Negative Image is free to download, with no in-app purchases.

### Which has better reviews, Lghtmtr or Simple Negative Image?

Lghtmtr and Simple Negative Image are both rated 4.5 out of 5 on the App Store, from 129 and 115 ratings respectively.

### Do Lghtmtr or Simple Negative Image have ads?

Simple Negative Image shows ads; Lghtmtr does not.

### Which is updated more often, Lghtmtr or Simple Negative Image?

Lghtmtr ships an update every 4 months, and Simple Negative Image every 2 months. Most recently, Lghtmtr was updated on October 1, 2026 and Simple Negative Image on September 25, 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.*