A free app for Android, by wola.io.
WOLA is the perfect tool for anyone looking to learn a language. The dictionary contains words in different forms, including the verb, the noun, the adjective, the adverb, the conjugation, and the infinitive.
The dictionary also contains information about the different tenses, such as the present, past, present continuous, past continuous, future, future continuous, and past hypothetical.
In this app, you can also chat with native speakers. It provides you with the online translation of chat messages. You can even communicate with friends around the world.