There are a lot of memory and junk cleaner apps out there but this Cleaner Master app should be your first choice tool. This fancy app combines all the boost & clean features in a single app to clean the rubbish content of your Android phone as well as monitoring system resources usage, plus, it offers you some dedicated tools to support optimisation. The total app size is only 6MB, probably the most lightweight cleaner app in the market. The main target of Cleaner Master is optimising your Android phone resources by using least resources.
Main app features include:
Cleaner Master is available for free on Google Play.