Word Vault Downloads & RevenueWord Vault: Vocabulary Builder · App Store
Word Vault: Vocabulary Builder is #39 in Reference Paid in Canada and charting in 3 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperChaotic Good, LLP
CategoryReference
Price7.99 AUD
Released
Rating★ 5.0 (10)
Version2.2.9
Age rating12+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)5k+ worldwide
Word Vault: Vocabulary Builder update history & changes
Last change · 9 events since 20 Jun 2013Full timeline ↓📈Charting in a new country📈Entered the top 100🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 8 events in the last 12 months
- 📈Word Vault: Vocabulary Builder charting in a new countryCanada
- 📈Word Vault: Vocabulary Builder entered the top 100Top Paid · Reference · CA
- 📈Word Vault: Vocabulary Builder entered the top 100Top Paid · Reference · AU
- 📈Word Vault: Vocabulary Builder charting in a new countryAustralia
- 📈Word Vault: Vocabulary Builder charting in a new countryUnited States
- 📈Word Vault: Vocabulary Builder charting in a new countryRussia
- 🆕Word Vault: Vocabulary Builder first spotted by AppInsider#59 in Top Paid · Reference · India
- 🆕Word Vault: Vocabulary Builder released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
10 ratings
Measured
Best rank now
#39
Reference PaidMeasured
Word Vault: Vocabulary Builder on the App Store
App details
App ID
582816194
Publisher
Chaotic Good LLP
On the store since
Jun 2013
13 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Content rating
12+
2 content notes below
Languages
1
EN
Size
156 MB
Also listed in
Education
Content notesInfrequent/Mild Sexual Content and NudityInfrequent/Mild Alcohol, Tobacco or Drug Use or References
Word Vault: Vocabulary Builder downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Canada | ReferencePaid | #39 |
| India | ReferencePaid | #69 |
 Saudi Arabia | ReferencePaid | #199 |
Apps near Word Vault: Vocabulary Builder on the chart
Reference Paid, around #39.
Ratings
App Store, worldwide.
Rating
5.0 ★
10 ratings
Measured
Ratings
10
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
3.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Reference apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Word Vault: Vocabulary Builder
*** 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.
Features:
- 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:
wordvault://define?text=yourtext
If you'd like to get in touch for any reason, you can follow @chaoticgoodies on Twitter, or email [email protected].
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.
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.
Features:
- 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:
wordvault://define?text=yourtext
If you'd like to get in touch for any reason, you can follow @chaoticgoodies on Twitter, or email [email protected].
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.
Latest updates
2.2.9
Fixed a bug that caused a crash when looking up less common words.