iThesaurus is a free app available from the Reference section of the App Store, and it takes up a whopping 4.2 MB of space on your iOS device, the equivalent of a relatively short music track. This app is supported by ads which can easily be ignored as they appear at the bottom of the screen and aren't very intrusive on the otherwise-clean interface.
So, this app takes up minimal space, is free to download, and will help you expand your vocabulary! When you type a word into the Search function, you will be presented with a list of the words that can be tapped to view their separate definitions.
Not only will you find over 140,000 words along with definitions available in case you need them. If you learn a new word that you are itching to share with someone, simply post it to Facebook, Twitter or Tumblr, or do it the old-fashioned way via email.
You will also learn pronunciations for over 636,000 words in this app, and not only will you find synonyms, but also antonyms as you should on any thesaurus resource.
Neha has been writing and editing since 2010 and has been reviewing iOS apps since early 2014. She has lived in four different countries and loves having the world at her fingertips thanks to these awesome apps.