# Luxmeter vs eTDC

The clearest difference is in-app purchases: eTDC at none against Luxmeter's 7. eTDC also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Luxmeter sells 7 in-app purchases, starting at $5.99 per 7 days. eTDC asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Luxmeter | eTDC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (255 ratings)](https://appshunter.io/ios/app/luxmeter-lux-light-meter/id6746211051/reviews)** | — |
| Number of ratings | **255** | — |
| Positive reviews | 7.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 172 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [STOMBERG s.r.o](https://appshunter.io/developer/1703467445) | [Pawel Migdal](https://appshunter.io/developer/1792923476) |

## What reviewers say

### Luxmeter

[App page](https://appshunter.io/ios/app/luxmeter-lux-light-meter/id6746211051)

This app measures light intensity in lux and provides real-time exposure suggestions for photography. It offers customizable settings for shutter speed, aperture, and ISO, with options for both front and back cameras. It's designed for personal use to optimize lighting and capture better photos.

**Highlights:** Light intensity measurement (lux, foot-candles), Real-time color temperature readings, Exposure suggestions, Manual shutter speed, aperture, ISO control, Front and back camera support, Customizable settings

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Luxmeter Pro | $5.99 | per 7 days |
| Luxmeter Pro | $5.99 | per 7 days |
| Luxmeter Pro | $8.99 | per 7 days |
| Luxmeter Pro | $9.99 | per 7 days |
| Luxmeter Pro | $9.99 | per 7 days |
| Luxmeter Pro | $9.99 | per 7 days |
| Luxmeter Pro | $29.99 | per year |


### eTDC

[App page](https://appshunter.io/ios/app/etdc/id6751596819)

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

**In-app purchases:** none


## Frequently asked questions

### Is Luxmeter free?

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

### Is eTDC free?

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

### Do Luxmeter or eTDC have ads?

Luxmeter shows ads; eTDC does not.

### Which is updated more often, Luxmeter or eTDC?

Luxmeter ships an update every 5 days, and eTDC every 5 days. Most recently, Luxmeter was updated on November 5, 2026 and eTDC on October 30, 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.*