What about 英辞郎（eijiro), if you can read Japanese? I'm not sure this app is available on Android :/

Tae Kim is my preferred.. He starts with learning kanas but you can skip to the conversational Japanese chapter . It's quite insightful for beginners and those with a solid foundation and want to improve on natural dialogue building

Thanks for your reply. I just googled Japanese learning apps for non-Japanese. I suggest these three apps No.1 https://play.google.com/store/apps/details?id=net.qpen.android.nihongonoki&hl=ja No.2 https://play.google.com/store/apps/details?id=net.qpen.android.nihongo5.lite&hl=ja No.3 https://play.google.com/store/apps/details?id=net.qpen.android.nihongo3.lite&hl=ja I hope you'll like it. good luck:) I don't know if you can get these apps from other countries. (these are Japanese apps) I hope you can.

It's not a learning app, but this dictionary is the best dictionary I found. You can also make flashcards with the vocab you learn and is very complete. https://play.google.com/store/apps/details?id=com.renzo.japanese&utm_source=global_co&utm_medium=prtnr&utm_content=Mar2515&utm_campaign=PartBadge&pcampaignid=MKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1

I have exactly what you need... " human Japanese" It is a great app which will help you to learn a lot. writing, reading, speaking & everything.... it is basically a beginners course in the shape of an app. It is not free, but you can try the trial. you will love it