A free app for Android, by Honso.
This is a free, simple, and easy-to-use application. You can quickly and easily add the required key words to your vocabulary.
How to use the application:
If you are a beginner, we recommend that you start with the most basic level. In other words, try the first scenario and the second one. If you want to go further, you can choose the third scenario. The last scenario is more advanced.
In all scenarios, you will need to add the key words to your vocabulary. After that, you will need to set the level of difficulty. For instance, you can choose the first level.
If you want to go further, you can choose the second level.
You will be able to find all the key words in the application. The words that are not found are those that you will need to add to your vocabulary.