neko.science app for iPhone and iPad
Developer: brokensociety
First release : 20 Jun 2017
App size: 6.96 Mb
Flashcard like game for translating sentences, at the moment it has about 5000 advanced sentences per language(Japanese, Spanish, French, Dutch, German, Italian, Finnish)
After watching countless hours of anime over the last 20 years, I decided that it is time to learn Japanese so I can watch the battles without reading subtitles :)
I thought this kind of game will be fun, where you compete with other people to translate the same sentence, and of course in the future we will add more material, so it will be even more fun.
It uses naive bayes classifier to try to give you sentences of difficulty that challenges you. (basically tries to give you sentences of which you can translate 50%)
The code is open source, you can check it out at https://github.com/jackdoe/neko and contribute by adding more sentences