Editors' Review for Merriam-Webster
Merriam-Webster is one of the best apps for English language reference, education, and vocabulary building. It's a free app with a voice search function which saves time. Meanwhile, no internet connection is required to view the definitions or thesaurus (although you do need a connection to view illustrations, hear audio pronunciations, and use voice search). These 2 features are extremely convenient for our words looking up.