일단어 던전2: JLPT N5 N4 for Android

A free app for Android, by Terry Young Studio.

In this game, you'll be able to learn Japanese in an easy way. It's a fun game that will allow you to learn Japanese words and sentences with ease. The app is made in such a way that it is easy to understand, so even if you have never learned Japanese before, you will be able to get the hang of it quickly and easily.

The way the app is set up is such that it is easy to learn and memorize the words and sentences. You will only need to input a single letter at a time, and the app will automatically recognize and translate the word for you. So you won't need to worry about spelling or grammar. You can also input multiple letters at a time, and the app will automatically combine them into a word.

So if you want to learn Japanese, this app is definitely worth checking out. You will be able to learn the basics of Japanese in a fun and easy way.