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*** Featured on the iTunes Home Page, and in Reference and Education ***

Have you ever looked up a word, only to forget its meaning later?

Word Vault stores all the words you want to remember and helps you to internalize them. Mundane, exotic, functional, highfalutin: amass a cache of words you love, then learn them all.

We learn fastest with frequent exposure to new words. Use Word Vault as your regular dictionary app, and it will remind you to come back and review the words you've looked up. Reviews are quick, fun, and help you to get words out of your phone and into your brain.

- Robust offline English dictionary, and online lookup for esoteric words
- Vocabulary review system with a configurable schedule
- Pronunciations
- Images and Illustrations
- Translations (See note* below!)
- Auto-complete and spell-check suggestions
- Thesaurus functionality
- Customization of your word list with notes, sources, and favorites
- Example sentences
- URL support, so you can look up words from other apps:

If you'd like to get in touch for any reason, you can follow @chaoticgoodies on Twitter, or email contact@chaoticgood.com.

Psst, Educators: You can purchase Word Vault for students, teachers and administrators at a discount through Apple’s Volume Licensing Program!

*Translation functionality can be activated with a one-time in-app-purchase. Please note that translations are provided for the words looked up and not for definitions. Translations are provided via Microsoft Translator, which does not have a 100% accuracy rate, especially for isolated words without context. An upcoming update will include the ability to test translations in your language of choice before paying for the in-app-purchase, to help you better gauge the value of the functionality before paying.

What’s New

Version 2.2.2

Adjusted UI for iPhone X!

Recent Fixes:
- Review reminders now work again. This took longer than expected to fix since I was barking up the wrong tree, and the first tree had snakes in it.
- Words in reviews are now appropriately redacted again.

Ratings and Reviews

4.5 out of 5
44 Ratings

44 Ratings

Whudson5 ,

Favorite Vocab app

I’ve used this for years and love it. Most vocabulary apps are about flashcards and flipping a word with an answer. The ability to look at definitions and type in the spelling has worked well for me. Hope more features are added—like controlling when you want to work on words that you haven’t come across yet. In my word vault I have over 10,000 words I’ve selected from years of reading that I like to keep fresh. However, the app doesn’t allow me to control when it goes back to old words. I’ve had this app for a couple of years and have only gotten to around word 7,000, mostly the result of inactivity for a couple days or so which means I have to go back over words I’ve already learned. If you could provide more control over this or create a feature when the app doesn’t go back over old words at midnight every night that would be great.

ilovenicknames ,

Great App: Future Features

My only complaint (if you can really call it that) is that the export feature only includes notes and not the actual word definition-which, to me, is why I want to back up my words in the first place. Other than that, it still offers the ability to save your word to a list, the design is beautiful, the notes and resources section are killer (maybe categories in the future), and the overall experience is super rewarding.

jansch0 ,

Good but could be better

Great app to learn vocabulary, but I find the definitions not to be up to par with other dictionaries, and a bit lacking of good examples. For example, for the word ‘ilk’ you get “a kind of person”, which is quite a simplistic definition. For comparison, the Oxford English Dictionary defines it as “a type of person or thing similar to one already referred to”, Collins defines it as “a type; class; sort (esp in the phrase of that, his, her, etc, ilk)”, and Macmillan as “of its/that/their particular type or kind”.

You can add your own notes in the app, but I find that I have to do so with most words I save, which is a big hassle. It would be great if you could choose which dictionary to get definitions from.


Chaotic Good LLP
175.4 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 12+ for the following:
Infrequent/Mild Sexual Content and Nudity
Infrequent/Mild Alcohol, Tobacco, or Drug Use or References
© 2015 Chaotic Good, LLP
In-App Purchases
  1. Enable Translations $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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