# Lghtmtr vs RETO3D

The clearest difference is review sentiment: Lghtmtr at 80% against RETO3D's 35%. Lghtmtr also leads on rating (4.6 vs 3.2) and ratings volume (167 vs 37). RETO3D's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Lghtmtr sells 1 one-off in-app purchase. RETO3D asks for nothing beyond the download.

Lghtmtr holds the better App Store score, 4.6 against 3.2. Both are backed by a comparable volume of ratings — 167 and 37 respectively. Written reviews point the same way: 80% of Lghtmtr's written reviews are positive against 35% of RETO3D's.

Lghtmtr ships an update every 3 months, RETO3D monthly. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Lghtmtr | RETO3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (167 ratings)](https://appshunter.io/ios/app/lghtmtr/id956251190/reviews)** | [3.2 (37 ratings)](https://appshunter.io/ios/app/reto3d/id1476810662/reviews) |
| Number of ratings | **167** | 37 |
| Positive reviews | **80.0% of reviews** | 35.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 291 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Jacque](https://appshunter.io/developer/1164318048) | [RETO PRODUCTION LIMITED](https://appshunter.io/developer/1463746642) |

## 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 |


### RETO3D

[App page](https://appshunter.io/ios/app/reto3d/id1476810662)

Create engaging 3D effect videos using three photos and a chosen focus point. Customize your creations with various frames and easily share them on social media. Unlock more features with the premium version.

**Highlights:** Generate 3D effect videos, Select focus point in photos, Apply various frames, Crop and rotate video, One-tap social sharing, Unlock premium features

**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 RETO3D free?

RETO3D is free to download, with no in-app purchases.

### Which has better reviews, Lghtmtr or RETO3D?

Lghtmtr is rated higher. Lghtmtr averages 4.6 out of 5 from 167 ratings, while RETO3D averages 3.2 from 37 ratings.

### Do Lghtmtr or RETO3D have ads?

Neither Lghtmtr nor RETO3D shows ads.

### Which is updated more often, Lghtmtr or RETO3D?

Lghtmtr ships an update every 3 months, and RETO3D monthly. Most recently, Lghtmtr was updated on November 11, 2026 and RETO3D on November 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.*