This is the perfect application for those who are studying english. You can find the English grammar and English Phrase in use.
To speak in a clearer and more effective manner we have to study grammar as well as are able to use English phrase. Grammar is the study of words and the ways words work together.
And phrases are the ways to say something which are useful in English conversation.
This app will help to improve your English grammar:

Active Or Passive Voice
Adjectives
Adverbs
Articles
Auxiliary Verbs
Capitalization
Conjunctions
Determiners
Future Tense
Grammar In Use
Independent & Dependent Clauses
Infinitives
Interjections Introduction Nouns Phrases Prepositions;
Irregular verbs
Nouns
Past Tense
Present Tense
Pronouns Quantifiers Question Tags Reported Speech Tenses Verbs.
and more...

This app is also a English phrasebook for you. It collect many ways in simple formal or informal English phrases to express yourself effectively.
These phrases are very basic and simple.
You can find these phrase topics in this app:

Greetings and Expressions
Expresing Hello Goodbye Apology and someone congratulations.
Asking for help time giving instruction of directions or giving invitation.
Make a phonecall an appointment
Giving an opinion compliments...
Shopping greating for Holidays (Chrismas new Year...)