Apps similar to Cee include Anki, which is free and open source. Other options are RemNote, LearnObit, Deck and Simply Learn Languages. You can choose from more than 10 Flashcard Learning Tools like Cee for the web, iPhone, Android, Mac and Windows.
Pauk is an electronic Flashcard learning System with 6 Levels. You can use Pauk for all subjects which require factual based knowledge, for all levels of complexity. Pauk offers various learing modes like SpacedRepetition, Kickstart, ExamMode etc.
Kanji Book is a spaced repetition tool to study and review up to 6000 kanji with the help of interactive mnemonics. Your knowledge will be tested using multiple choice questions as well as entering translations in Japanese.
Thailand
