Light Meter LM-3000

Name: Light Meter LM-3000
Rating: 4.5 (2527 reviews)
Author: Lightray Innovation GmbH

By: Lightray Innovation GmbH App

Simple & accurate measurement!

Overview

Version:

4.4.3

Last updated: 2026-06-30

Features & Capabilities

Light Meter LM-3000 turns your iPhone into a professional-grade light meter. It measures illuminance (lux and foot-candles) and Correlated Color Temperature (CCT in Kelvin) using RAW image processing and device-specific calibration, delivering ISO/CIE 19476-compliant accuracy trusted by photographers and engineers.

Key features include pre-calibration for your device, ad-free operation, no unnecessary permissions, peak readings, a HOLD function with an acoustic signal, and customizable calibration to align readings with another meter. A diffuser is required for accurate results; you can DIY a diffuser with printer paper in under a minute or buy the dedicated Diffuser Accessory with free worldwide shipping. The app offers a free trial with flexible payment options and supports environmental initiatives through a 1% donation program.

User Growth & Download Statistics

App Photography Education

By:

Lightray Innovation GmbH

Rating:

4.50

(2,527)

Version:

4.4.3 Last updated: 2026-06-30

Version code:

887444217

Creation date:

2021-03-09

Compatible devices:

Size:

21.81MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-19

Compare stats and ranking:

Ranking

# 38,686 ▼ 970

Other rankings

#56 in light keyword 37 ▲ 11

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Lightray Innovation GmbH

Apple Apps Store

https://apps.apple.com/us/app/light-meter-lm-3000/id1554264761

Website:

https://lightray.io/lightmeter/

User Reviews

User reviews split clearly. The app is praised for its thoughtful design, ease of use, affordable one-time pricing, helpful setup instructions, and responsive support. However, persistent issues deter many: a mandatory diffuser for meaningful readings (often upsold) and frequent pricing misrepresentations; invasive ads that block use; and reliability concerns without the diffuser, including limited features like spot metering. Overall, it has value when used with the diffuser and proper guidance, but pricing clarity, ads, and consistency are major drawbacks.

Pros

Well-designed UI and easy to use
One-time purchase with a trial option instead of a subscription
Helpful documentation (reading instructions and a video) and diffuser setup guidance
Accurate readings when used with a diffuser and useful for science applications
Responsive and helpful customer support

Cons

Requires a diffuser to function; readings are not possible without a diffuser, and diffuser purchase is often upsold or required
Deceptive pricing / hidden trial; app often described as free but demands payment or subscription
Intrusive ads and pop-ups that interrupt use and push purchases
Unreliable/inconsistent performance without a diffuser (and some features like spot metering are missing)
Battery-like pricing promises and repeated charges or renewals that feel misleading

Recent reviews

Just make a light ad based version for hobbyists and occasional use; the battery stuff is actually just annoying and stupid and not as clever as they would like you to think and needlessly complex. Keep the pro full version as is.