Android Manga reader with Japanese OCR and dictionary capabilities
OCR Manga Reader is a free and open source Android app that allows you to quickly OCR and lookup Japanese words in real-time. It does not have ads or telemetry/spyware and does not require an Internet connection. Supports both EDICT and EPWING dictionaries. Requires Android 4.0 (Ice Cream Sandwich) or higher. See http://ocrmangareaderforandroid.sourceforge.net/ for details.
Remata is a flashcard program that focuses on providing aids to students of Koine Greek. However, its ability to import card data from text files makes it suitable for all types of study material.