"To put it simply, Lux kicks the pants off of Android’s stock brightness manager, and it’s worth every cent." - Lifehacker
"Lux is a third-party app that allows you to easily calibrate your phone’s brightness sensor, saving you battery power and reducing eye strain if your phone is normally too bright in dark rooms." - HowToGeek
Lux isn't your ordinary brightness app. It intelligently adjusts the brightness of your display based on the environment you're in. If you step into a dimly lit room, Lux will automatically lower the brightness of your display to make it not only comfortable to read, but to also preserve battery power.
Lux is also able to adjust the screen temperature of your display automatically to make it appropriate for night usage. At sunset, you can have Lux automatically warm your display and switch to your Night profile. If you're an astronomer, you can enable astronomer mode to cut out harsh white light. If you have a root enabled phone, you may even be able to apply these enhancements at a low level with Lux's plug-in system.
Perhaps the best thing about Lux is that you can teach it how to behave. If the backlight is too bright or dim for your liking, simply open the provided Dashboard, adjust the brightness slider to the level you desire, then hold the link button. Lux will use this new 'link' as a reference in future.
Give it a go! I want you to test Lux for more than the 15 minute refund period offered by Google. I understand that some devices may not have the best quality light sensor, and that you may need more time to play around with settings. If you find that Lux doesn't suit you after the 15 minutes is up, you can request a refund within a week of purchase via e-mail - no questions asked.
■ Stable, custom auto brightness with root plug-in support.
■ Use your ambient light sensor or camera(s) to read in ambient light.
■ Subzero brightness for night viewing.
■ Select between Auto, Day, Night, Car and Cinema light profiles
■ Automatic night mode. Change the colour temperature of your display for comfortable night time viewing.
■ Astronomer mode. Adds a red filter to your display to preserve the eyesight of stargazers.
■ Power-user settings such as choice of interpolation, filters, and linked sample editing.
■ Add app specific exceptions via sleep mode. NOTE: This is broken in Android 5.0 due to API changes beyond my control.
■ Customisable fade for backlight adjustments.
■ Tasker and Locale support
■ Battery efficient.
■ Backup to SD.
■ No ads or other nuisances.
Note: Please disable other brightness apps before using Lux. The author is not liable for any issues caused when using this app.
Want Lux in your language? Join the translation project here:
TAKE PICTURES AND VIDEOS: Used to read in luma values if camera input is selected.
DRAW OVER OTHER APPS: Required for night/astro mode.
READ PHONE STATE: Required to prevent Lux from interfering with phone controls in Android 4.1.
MODIFY SYSTEM SETTINGS: Brightness is a system setting, as is toggling the default auto brightness.
RETRIEVE RUNNING APPS: Required to make the 'sleep list' functionality work, so Lux can disable itself when certain apps are in the foreground.
COARSE LOCATION: Required to automatically calculate sunrise/sunset times.
Need assistance? Have questions? Contact me via the 'Send Feedback' button in Lux settings, or via email at firstname.lastname@example.org.
NOTE: Please use the power symbol in the notification to temporarily toggle Lux when using secure views, such as banking apps, VPN and accessibility settings.
When using the default settings, your display will get a warmer tint (lower color temperature) when the sun is down, vastly reducing strain on the eyes. Blue light makes your brain want to stay awake, and a lower color temperatures reduces the amount of blue displayed; using this in the evening reduces your brain's effort to keep you awake at night. (See f.lux for your PC)
During sleeping hours by default a red filter is used. Red strains your eyes the least, and retains your night vision.
The light sensor can be used to automagically adjust the color: switch to the sleep filter in full dark, or to the day filter (usually none) under bright lights.
Because light sensor quality varies wildly between devices, a calibration option is provided to experiment with.
Several filters are provided. Those named after a color (red, green, blue, amber, salmon) do not limit the display to those colors, but convert the displayed image to grayscale first, then display that image in levels of the selected color. This preserves details that would otherwise be lost.
Grayscale, invert colors, temperature adjustment and custom R/G/B adjustment filters are also provided.
The master color filter setting also has an option for colorblindness enhancement, with settings for protanopia/anomaly, deuteranopia/anomaly and tritanopia/anomaly. These options redistribute colors across the spectrum, in theory enhancing clarity and color detail.
No claims are made to the effectiveness of these filters, but positive reports have been received from testers. Note that these filters were thought up by Google engineers, CF.lumen just includes them.
Upgrading to CF.lumen Pro will support my developments, remove all nags, unlock the option to start at device boot (make sure you test your configuration first), and unlocks notification options. It also enables Tasker integration.
In Pro mode, the notification adds convenient buttons to quickly disable the current filter or switch to sleep mode, and you can switch the notification to when enabled mode, which shows the notification only when a color filter is active.
In non-Pro mode, the notification only asks you to upgrade to Pro. It may seem that notification is just there to annoy you, but it actually prevents Android from randomly killing the background service taking care of all the work. Getting rid of it without getting the service killed can be done by going to Settings -> Apps -> CF.lumen and unticking Show notifications.
As in the past CF.lumen was part of Chainfire3D, if you have the Pro package of the latter installed, Pro mode will also be enabled.
When no color filter is active, there should not be any noticeable performance impact. When a filter is active, impact depends on device and what you are doing. On some devices we have tested there was no performance impact at all, on others it was slightly noticeable. It also depends on the driver in use.
Keep in mind that Android's rendering system changes over time. You should be aware that this app may simply stop working on future Android versions without the possibility of a fix.
By far most permissions are used only for Google Maps to set your location, and Google Play to provide for In-App Purchases. I cannot make any claims as to what information the Google components do or do not send to Google servers, but no information is sent to me or anyone else (than Google).
Even more information, discussion, and support, can be found in this app's thread on XDA-Developers: http://forum.xda-developers.com/showthread.php?p=51779367
Features( Totally Free and No Ads ):
✓Real-time temperature monitoring
Monitors and logs phone temperature in real time, and displays temperature change curves.
✓Dynamic overheating app detection
Analyzes CPU usage dynamically, and detects apps that are overusing CPU to determine the cause for phone overheating.
✓One tap to cool down
Allow you to close overheating apps with one simple tap to reduce CPU usage and cool down your phone.
Closes apps that are likely to cause overheating, and prevents the phone temperature from rising.
★Why does my phone overheat?
Constantly high CPU usage is mostly the reason why your phone overheats. Some apps tend to use the CPU for a very long time in the background, which causes your phone , especially android phones to produce excessive heat.
★How dose Cooler Master work?
Cooler Master is designed to monitor the CPU usage of your phone, and detect apps with high CPU usage so you can close them
★Why does my phone get so hot?
It’s normal for your phone to get hot when you are using complicated apps, watching video clips, or while you recharge it. In such cases, just put your phone somewhere cool and ventilated, and the temperature should drop soon.
English, Simplified Chinese, Traditional Chinese, Spanish,Portuguese Brazil, Russian, Indonesian.
The features listed above are available for free. There are no in-app ads.
Please contact us at email@example.com if you have any questions or suggestions.
Professional light intensity (lux) meter for your device.
It measures illumination levels in lux.
■ direct reading in lux
■ 0 to 1000lux in 2 ranges
■ up to 300000lux in ICS+
■ automatic range change
■ support for neutral filters
■ 5% max error (device dependent)
■ predefined and custom calibration
■ sensor linearity correction option
■ alternative display in fc (foot-candles)
■ display of light color temperature in K
(available only on supported devices)
■ realistic vintage analog look
■ tablet support
■ 18 case skins
This app requires devices with a light sensor. It uses native light sensor data acquisition that gives accurate and instant light intensity reading. This type of native data acquisition is available for many supported devices.
Other devices are also supported by the built-in compatibility mode but the accuracy and the speed of light intensity reading may be limited and custom calibration is required for correct reading under compatibility mode.
Custom calibration procedures are described on the following page:
Also, on some devices the light sensor may not be linear, not continuous and measuring errors will occur or the maximum measuring range may be limited. This is not app's fault.
This app also provides a light color temperature measurement in K (degrees Kelvin) that is only supported on devices employing color light sensor. On all other devices the display shows n/a (not available).