Comparison

Vocab Builder vs BrainRock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Vocab Builder

Enhance your English vocabulary with AI-powered word suggestions and personalized learning paths. Master new words through engaging levels, example sentences, and spaced repetition techniques. Prepare for standardized tests like TOEFL and IELTS with curated word lists.

Highlights
  • AI-generated word lists
  • 1000+ categories
  • Definitions and examples
  • Basic to advanced levels
  • Spaced repetition
  • Progress tracking
  • Exam preparation
Features
Read full description

No matter how good you are at English, you can always learn new words and improve your vocabulary with Vocab Builder App. Vocab Builder: • Unlimited words in 1000+ different categories updated daily by AI • Definitions and example sentences for every word • Basic, Intermediate, and Advanced vocabulary sections • Beat levels to unlock new words • Track your progress as you study • Now available on iPhone and iPad Our app also helps you prepare to exams like TOEFL and IELTS Created by experts, backed by AI * The entire wordlist is selected and defined with our AI technology that analyse your progress, mistakes and your level to provide you interesting words every day. Designed for fun and learning that really sticks * Each level you beat unlocks a harder one: more words and more advanced vocabulary. Words you don't know will be repeated until you master them, using spaced repetition which has been shown to be a very effective memorization strategy. Have any questions? Please ask! * Customer satisfaction is incredibly important to us. If you have any questions or comments, please contact us at https://chorrusgames.com/support and we'll get back to you as quickly as we can. * Subscription and Pricing: If you choose to purchase, payment will be applied to your iTunes account at confirmation of purchase. Subscriptions will automatically renew unless canceled within 24-hours before the end of the current period. You can cancel anytime with your iTunes account settings. Any unused portion of a free trial will be forfeited if you purchase a subscription. The current Vocab Builder Pro subscription starts at $9.99 USD/month. Prices may vary in different countries. Privacy Policy: https://www.notion.so/Privacy-Terms-b7c8da7e80cb49de812ce7928b19faaf Terms of Use: https://www.notion.so/Privacy-Terms-b7c8da7e80cb49de812ce7928b19faaf

About

BrainRock

Features
Read full description

Learning a language should feel simple—not like homework. Tell BrainRock what you want to learn: travel phrases, everyday conversation, work, exams, or a hobby. AI instantly creates a vocabulary pack matched to your level, with useful examples and clear pronunciation. No deck building. No overwhelming lessons. Just a few useful words at a time. WHY BRAINROCK FEELS EASY • Learn words you actually want to use • Start in seconds from a topic or photo • Listen and repeat with audio pronunciation • Lock in memory with quick quizzes • Keep momentum with daily review reminders • Watch your progress grow as you level up PERFECT FOR Travel, conversation, TOEIC, TOEFL, JLPT, HSK, TOPIK, DELE, business, and everyday vocabulary. Pick a topic. Learn for a few minutes. Come back tomorrow. Small sessions turn into real progress. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rockparks.com/brainrock/privacy.html

Screenshots

Vocab Builder4 screens
BrainRock4 screens

Verdict

The call

The clearest difference is in-app purchases: BrainRock at none against Vocab Builder's 4. BrainRock also leads on update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Vocab Builder sells 4 in-app purchases, starting at $4.99 per 7 days. BrainRock asks for nothing beyond the download.

UpkeepUpdate frequency

Vocab Builder ships an update every 3 months, BrainRock weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Vocab Builder versus BrainRock: the parameters behind the verdict, then further details
ParameterVocab BuilderBrainRock
PriceFreeFree
Rating4.8 (69 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings69 — better—
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size38 MB164 MB
Age rating4+4+
DeveloperCHORRUS GAMES S.L.HAYOUNG KOH

In-app purchases

4 purchases

Vocab Builder

Subscriptions4
  • Vocab Builder Pro - Weekly$4.997 Days
  • Vocab Builder Pro: Monthly$9.991 Month
  • Vocab Builder Pro - Limited$14.991 Year
Show 1 more
  • Vocab Builder Pro: Yearly3 Days trial$29.991 Year
None

BrainRock

No in-app purchases

Questions

Is Vocab Builder free?
Vocab Builder is free to download, with in-app purchases available.
Is BrainRock free?
BrainRock is free to download, with no in-app purchases.
Do Vocab Builder or BrainRock have ads?
Neither Vocab Builder nor BrainRock shows ads.
Which is updated more often, Vocab Builder or BrainRock?
Vocab Builder ships an update every 3 months, and BrainRock weekly. Most recently, Vocab Builder was updated on November 3, 2026 and BrainRock on November 5, 2026.

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