Weblio is a free Japanese dictionary app for Android devices. It's one of the best and most popular dictionary apps on the Play Store, and has been used by millions of people.

Weblio is an online Japanese dictionary, so it needs to be connected to the internet in order to work.

If you have a slow internet connection or you don't have any network at all, you might experience difficulties in searching for words and other information.

Weblio has a function that allows you to look up words in your phone's memory, which can make the app faster and more efficient.