Looking for an app where you can quickly store new expressions that you don't want to forget? My Vocabulary lets you create your own dictionaries and fill in with any content you want to.

You can also practice whenever and wherever you want even when you're offline.
The "Quick quiz" will only ask you five questions to make it quick however if you want to be thorough then choose the "Ask me everything" option.
Words that were missed the most often will be asked if you pick "Weaknesses".

Deepen your knowledge by twisting the questions around.

Words are not the limit you could also use this app for memorising definitions expressions or anything you need.

Go and check it out yourself. Happy learning!