Comparison

Keep Screen On & Dimmer Screen vs Screen Brightness Nits Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Keep Screen On & Dimmer Screen

Prevent your device's screen from turning off automatically and adjust its brightness to a very low level. This utility is ideal for tasks like long uploads or downloads, or for developers needing continuous screen visibility.

Highlights
  • Keep screen on indefinitely
  • Reduce screen brightness to zero
  • Prevent screen timeout
  • Useful for long uploads/downloads
  • Aids developers needing constant screen visibility
Features
Read full description

Keep Screen On & Dimmer Screen brightness will help you do two those things in zero tap! Just open the app, your phone screen will be on forever and your phone screen brightness will down to zero too! Lower your phone screen brightness is an impressive feature of this app because most of us want to keep screen on and lower phone screen brightness together. Timeout to turn off is also a good feature! This app is useful when you want to keep screen on while uploading video to YouTube, downloading big file or for developer who want to keep screen on! Thank you!

About

Screen Brightness Nits Meter

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.

Highlights
  • Measure screen brightness (nits)
  • Real-time luminance readings
  • Multiple measurement units (fL, sb, L, asb, cd/ft²)
  • Camera-based measurement
  • Calibration for accuracy
  • Save measurements with notes
  • Multilingual support
Features
Read full description

Measure the brightness of any screen, monitor, TV, or display using your smartphone camera! Designed for professionals, enthusiasts, and anyone who needs quick and intuitive screen brightness measurements. ACCURACY The app is pre-calibrated against a professional nits meter, but for optimal accuracy on your specific device, we recommend calibrating the app using the built-in calibration feature. MULTIPLE MEASUREMENT UNITS Supports Nits (candela per square meter, cd/m²), Foot-Lambert (fL), Stilb (sb, cd/cm²), Lambert (L), Apostilb (asb, blondel), and Candela per ft² (cd/ft²). REAL-TIME MEASUREMENTS Get instant feedback with continuous real-time luminance measurements. SAVE MEASUREMENTS Save measurements with notes for detailed documentation and easy reference. MULTILINGUAL SUPPORT & DOCUMENTATION Full support for 40 different languages with comprehensive, integrated documentation. CUSTOMIZABLE SETTINGS Tailor the app settings to your specific needs. WHAT YOU CAN MEASURE • TVs and monitors • Computer displays • Smartphones and tablets • Digital signage • Professional monitors • LCD, OLED, LED, HDR, QLED and AMOLED displays PERFECT FOR • TV and display technicians • Video production professionals • Gaming enthusiasts • Home theater enthusiasts • Office lighting consultants • Photographers and videographers HOW TO USE Simply point your device's camera directly at the screen surface you want to measure. Position your device perpendicular to the screen at a distance of no more than a centimeter or half an inch from the display surface. Ensure the screen is set to D65 (6500K standard white). Other color temperature settings may significantly affect measurement accuracy. Privacy Policy, https://nits-meter.contechity.com/pp.html End User License Agreement, https://nits-meter.contechity.com/eula.html FREE FOR A LIMITED TIME Enjoy full functionality for a few weeks. After that, choose a one-time fee or subscription — still at a fraction of the cost of a dedicated device. DEDICATED SUPPORT Your feedback helps us improve the app. Contact us at apps@contechity.com for support or suggestions. Download now and turn your phone into a luminance meter for any screen or display.

Screenshots

Keep Screen On & Dimmer Screen4 screens
Screen Brightness Nits Meter4 screens

Verdict

The call

The clearest difference is rating: Screen Brightness Nits Meter at 4.3 against Keep Screen On & Dimmer Screen's 1.8. Screen Brightness Nits Meter also leads on review sentiment (67% vs 25%) and ratings volume (19 vs 5). Keep Screen On & Dimmer Screen's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Keep Screen On & Dimmer Screen sells 1 one-off in-app purchase and Screen Brightness Nits Meter sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Screen Brightness Nits Meter holds the better App Store score, 4.3 against 1.8. Both are backed by a comparable volume of ratings — 5 and 19 respectively. Written reviews point the same way: 25% of Keep Screen On & Dimmer Screen's written reviews are positive against 67% of Screen Brightness Nits Meter's.

UpkeepUpdate frequency

Keep Screen On & Dimmer Screen ships an update every 3 months, Screen Brightness Nits Meter every 2 months. The most recent releases landed on September 15, 2026 and September 4, 2026 respectively.

Scorecard4 real differences · 6 level
Keep Screen On & Dimmer Screen versus Screen Brightness Nits Meter: the parameters behind the verdict, then further details
ParameterKeep Screen On & Dimmer ScreenScreen Brightness Nits Meter
PriceFreeFree
Rating1.8 (5 ratings)4.3 (19 ratings) — better
Positive reviews25.0% of reviews66.7% of reviews — better
Number of ratings519 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size33 MB43 MB
Age rating17+4+
DeveloperNghi DoanContechity AB

Customer experience

Keep Screen On & Dimmer Screen

All ratings5 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews8 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

Screen Brightness Nits Meter

All ratings19 ratings
Positive73.7%
Neutral15.8%
Negative10.5%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

1 purchases

Keep Screen On & Dimmer Screen

One-time1
  • Remove ads forever$3.99
2 purchases

Screen Brightness Nits Meter

Subscriptions1
  • Full Access (Month)14 Days trial$0.991 Month
One-time1
  • Full Access (Lifetime)$6.99

Questions

Is Keep Screen On & Dimmer Screen free?
Keep Screen On & Dimmer Screen is free to download, with in-app purchases available.
Is Screen Brightness Nits Meter free?
Screen Brightness Nits Meter is free to download, with in-app purchases available.
Which has better reviews, Keep Screen On & Dimmer Screen or Screen Brightness Nits Meter?
Screen Brightness Nits Meter is rated higher. Keep Screen On & Dimmer Screen averages 1.8 out of 5 from 5 ratings, while Screen Brightness Nits Meter averages 4.3 from 19 ratings.
Do Keep Screen On & Dimmer Screen or Screen Brightness Nits Meter have ads?
Neither Keep Screen On & Dimmer Screen nor Screen Brightness Nits Meter shows ads.
Which is updated more often, Keep Screen On & Dimmer Screen or Screen Brightness Nits Meter?
Keep Screen On & Dimmer Screen ships an update every 3 months, and Screen Brightness Nits Meter every 2 months. Most recently, Keep Screen On & Dimmer Screen was updated on September 15, 2026 and Screen Brightness Nits Meter on September 4, 2026.

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