This app is most helpful to those who want to really improve their Spoken English skill with lots of examples and most commonly used vocabulary list in the English.

Topics covered
1) Words and sentences
2) Parts of speech
3) Tenses
4) Vocabulary list
5) Communication skills
6) Written communication
7) Degrees of comparison
8) Active and passive voice
9) List of verbs
10) Conversation topics
and many more..