KeitaiTango is derived from the Japanese words 携帯 keitai (mobile phone) and 単語 tango (word). It is a spaced-repetition flashcard app to learn vocabulary and grammar patterns. It's a super-charged Anki app with sentences from various respected sources such as JLPT Tango.

Some of the key features of this app are:
- Spaced-repetition algorithm to repeat Japanese sentences that you attempt incorrectly more frequently
- Furigana and hiragana translations
- Access to popular dictionaries such as Jisho, imiwa?, Japanese, Midori, Nihongo, Shirabe Jisho
- Tokenizer to highlight the nouns/verbs/particles
- Text Analyser to break down a sentence into each word and its definition
- Statistics to track how many cards you attempted and how many words you've learnt
- Game Center leaderboards and achievements to motivate you
- Audio output to shadow read the flashcards
- Widgets to immersively fit in a small bit of reading practice here and there
- Daily notifications to remind you to study

Please follow me on twitter (@keitaitango) and provide any suggestions/feedback for future versions.