Best Brightness Measure Apps

250+ iOS apps curated and reviewed

3.5 avg rating
19 free apps
Updated October 2026

With an average user rating of 3.5★, the brightness measure category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Brightness Measure Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Light Meter LM-3000Light Meter LM-3000Free4.5★ (2.6K)NoYesOct 2026
2LUX Meter - Light MeterLUX Meter - Light MeterFree4.2★ (10)NoNoOct 2026
3Screen Brightness Nits MeterScreen Brightness Nits MeterFree4.3★ (20)NoYesOct 2026
4Lux Light Meter ProLux Light Meter ProFree3.9★ (5.2K)YesYesNov 2026
5Light Meter: Lux & BrightnessLight Meter: Lux & BrightnessFree—YesYesOct 2026
6Light Meter - LUXLight Meter - LUXFree—NoNoOct 2026
7Lux Meter: Light MeasurementLux Meter: Light MeasurementFree—NoYesOct 2026
8Light Meter.Light Meter.Free—NoYesMay 2026

Top Picks for Brightness Measure

Light Meter LM-3000#1

Light Meter LM-3000 by Lightray Innovation GmbH

Simple & accurate measurement!
Editor's Choice
🔧 Utilities
4.5😐(2.6K ratings)
FreeIn-App Purchases
Light Meter LM-3000 screenshot 1
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Light Meter LM-3000 screenshot 3
Light Meter LM-3000 screenshot 4

Transform your smartphone into a professional light meter. Measure illuminance and color temperature with scientifically validated accuracy, trusted by professionals. Requires a simple diffuser for precise readings.

What We Love

  • 👍 Great app
  • 👍 Accurate measurements
  • 👍 Easy to use
  • 👍 Helpful customer service
  • 👍 Useful for science/research

Room to Improve

  • 🐛 Requires diffuser for accurate readings
  • 💰 Expensive for a light meter app
  • 🔋 Battery/trial period issues
  • 🔍 Inconsistent/inaccurate readings
  • 🙄 Misleading/deceptive marketing
LUX Meter - Light Meter#2

LUX Meter - Light Meter by Yannick Binay

Illuminance for photo & plants
Strong Contender
🔧 Utilities
4.2(10 ratings)
Free
LUX Meter - Light Meter screenshot 1
LUX Meter - Light Meter screenshot 2
LUX Meter - Light Meter screenshot 3
LUX Meter - Light Meter screenshot 4
LUX Meter - Light Meter screenshot 5

This app measures ambient light levels in lux or foot-candles using your iPhone camera. It provides instant feedback on whether a space is too dim, comfortable, or bright enough for various tasks and offers calibration options.

Screen Brightness Nits Meter#3

Screen Brightness Nits Meter by Contechity AB

Display TV Monitor Luminance
Worth Considering
🔧 Utilities
4.3(20 ratings)
FreeIn-App Purchases
Screen Brightness Nits Meter screenshot 1
Screen Brightness Nits Meter screenshot 2
Screen Brightness Nits Meter screenshot 3
Screen Brightness Nits Meter screenshot 4
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Screen Brightness Nits Meter screenshot 6

Measure the brightness of any screen, monitor, or display using your smartphone camera. Offers real-time measurements in multiple units and supports calibration for optimal accuracy. Ideal for professionals and enthusiasts needing precise luminance data.

More Brightness Measure apps to explore

FAQ about Brightness Measure

What are the best brightness measure apps for iPhone?
Light Meter LM-3000 tops our brightness measure apps ranking as of October 2026, with a 4.5-star average from 2.6K App Store ratings, and it's free to download.
Yes — 19 of the top brightness measure apps we rank are free to download, including Light Meter LM-3000 and LUX Meter - Light Meter.
Light Meter LM-3000 has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ brightness measure apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.