The English Dex will help you make a list of the English words you want to learn. and take basic learning tests for 2 months until you get a 100% mark for each recorded word.
In the basic learning test, you have to pass a listening test, a visual test, a writing test and a translation test for each word you have recorded.

When you search for a word in this app, you can automatically save that word and get its pronunciation, usage examples, and illustration images.