2.64K reviews
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About this app

RootDim was formerly known as SuperDim. RootDim requires root privileges on your device.

RootDim has been largely superceded by our ScreenDim, which does not require root (though it also has an enhanced root mode, which on some newer devices may work more reliably than RootDim) and has useful features like presets in the notification area.

RootDim lets you dim LCD screens (and a few OLED ones) to very low levels--lower than the OS normally allows (that's why you need root privileges)--to save night vision. This will be particularly useful for serious amateur astronomers.

On some devices you can also turn off LEDs (e.g., power LED).

If you have ChainFire3D, RootDim will let you conveniently control the nightmode settings together with the brightness settings.

You can save up to five profiles that can be restored with a single touch in the RootDim screen. The profiles include LCD backlight brightness and nightmode settings (if applicable). Long touch on profile button to save, short touch to load.

You can also create launcher shortcuts for particular saved profiles and for cycling through all the profiles.

If RootDim doesn't work on your device, email me at arpruss@gmail.com before leaving a low rating. Maybe I can fix it.

Note 1: Some devices don't allow going below the minimum value allowed by the OS. There is really nothing I can do about that.

Note 2: There is a special feature for some Archos 70/101 devices that have a firmware problem that prevents them from waking up properly when they've been put to sleep with a low brightness (this problem occurs even if you don't have SuperDim). Go to Menu|Options and choose that option if you have one of these devices, and it should fix the problem.

Note 3: For all the users who would like a widget, please remember the launcher shortcut feature.
Updated on
Feb 7, 2012

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
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No data collected
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Ratings and reviews

2.44K reviews
A Google user
February 28, 2020
Perfect app, was able to set my device's brightness to almost 0 with no issues, helpful when you're reading or trying to keep the battery alive for a long time.
20 people found this review helpful
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A Google user
December 13, 2019
Granting root, should give an access to each RGB light scheme modification, but this apps asking for root permission just like normal swiitch to reduce the brightness same as the in the settings... So why ask root permission??? Its should goes to control the power delivery to lcd light to shine more less or Dim the light... This apps is no doffrent then other trash app
13 people found this review helpful
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Peter Federighi
September 27, 2021
It's not as compatible as it was 7 years ago. Some of the automatic features don't always work. It still does the job, though.
1 person found this review helpful
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What's new

- bug fix
- add support for light control on devices that don't support 'trigger' interface
- include other light settings in profiles
- fix a light control bug
- but the light control is still broken on devices that don't support the 'trigger' interface
- allow renaming of custom presets
- renamed to RootDim
- better control over extra lights (still maybe not perfect)
- added support for additional devices
- fix for Archos Gen8 firmware bug