The latest update of this application was launched on Dec 22, 2018 and the tool was downloaded by over 10M users. A lot of users installed the app on their Samsung and HTC devices. A free .apk file of Twilight Blue light filter for better sleep 7.3 is available from Droid Informer and you can have a look at users' reviews on this site. Prepare 4 MB of free space on your device for this app setup package.
Based on the users’ opinions, the strong points of the app are a good interface, low consumption of memory, good performance, a screen freeze, little battery consumption and amazing customer support. From the users' point of view, this application possesses the following disadvantages: compatibility issues, intrusive ads and spammy notifications.