Pixiple - Find images similar in pixel and/or metadata content
Android Cleaner - Android Cleaner – Phone Booster and Memory Optimizer is a powerful and effective app to optimize your device’s performance.
ImageDupeless - ImageDupeless - the program for search/find of the similar images (duplicates) in the large galleries (collections).
Remo Duplicate File Remover - Remo Duplicate File Remover is a simple yet powerful duplicate file remover app that lets you easily search and remove duplicate files on your Android mobile and tablet.
VisiPics - VisiPics does more than just look for identical files, it goes beyond checksums to look for similar...
Dupdrop - Dupdrop – Duplicate File Remover is an Android tool created and published by Alexander Brunner.