Yamazaki Kento was unexpectedly reincarnated into a fantasy world with only a tablet filled with mysterious apps he needs to unlock.

From Alphapolis description:

Kento Yamazaki, an ordinary young man who can be found anywhere, finds himself reincarnated in another world with his tablet in his hand!? Kent polishes his housework skills, such as keeping things clean. Before long, he arrived at the adventurer's party "Akatsuki", which has unique members such as beautiful elves and silent handsome boys wearing glasses.
The long-awaited comicalization of the 12th Fantasy Novel Grand Prize Special Award-winning work!! Start living in a different world with a tablet in your hand!

Official Comic (JP)