Lollipop and Marshmallow users get adaptive icons thanks to Adapticons
One of the more interesting UI-related features that Android 8 promises to bring is the ability to use custom icons for the home screen based on various styles. This feature is called Adaptive Icons, and some custom UI skins already offered similar capabilities in the past. Now, Adapticons brings this feature to users of pure Lollipop, Marshmallow, and Nougat ROMs.
Adapticons is a free app that requires a payment of US$1 to remove ads and to unlock support for icon packs. This tiny payment also brings the ability to import icons from the gallery and to customize multiple icons at once. The list of features provided by the free edition includes manual size and rotation adjustment for the icon masks, three icon shapes to choose from, custom titles, and so on.
All in all, Adapticons is a good choice for those stuck with an older Android version who would like to spice it up by adding Android O-style icons. Although it has been recently added to Google Play, this app has been downloaded by more than 5,000 users already and holds a 4.2 rating after 149 user votes.