This is based on the idea from
4500 Sentences, but English > Japanese and from Glossika.com; coded by Python. If you can parse Python, you can also make a written/custom/shortened version.
Why EN->JP, not the other way round? Well, before of that topic, I am starting to think that EN->JP and JP->JP are both OK, but JP->EN alone should eventually be avoided. We should try to think in Japanese!
Chinese version also available, because I am learning Chinese right now.
For the speaking speed, you can use Audipo Android app to control the speed.
Audipo:Audio Speed Changer
Audipo is a music player that can change music speed. The app is useful for music dictation, music practice, language study , and listening to long audio etc.You could use this app as audiobook player and as radio player.Features- Audio speed change. ( x0.25 - x4.0 ) * This apps can change audio speed without pitch shifting.- Advanced audio control designed for long audio track. Multiple seek bars provides more control of seeking long audio.- Marking feature in audio track. You could put ma...