RootWords vs ThirtyB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RootWords
This word game helps users expand their vocabulary by building words from root components. It offers a fun way to learn word meanings and improve reading skills, beneficial for standardized tests and general language learning.
- Build words from root components
- Learn word meanings
- Improve vocabulary
- Enhance reading skills
- Test preparation aid
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RootWords is a fast word game based on root words. Choose a root, spin as many words as you can and show you know their meaning. Don’t know the word? Tap the parts, they each have meaning and will help you learn the word. The more you play, the fewer times you will need to tap the parts. Good for SSAT, PSAT, SAT, ACT, LSAT, MCAT, IELTS tests and ELL in general. RootWords is good for all learners really. Your score will soar! Improve your vocabulary, your reading skills, your job prospects!
ThirtyB
Prepare for standardized tests with engaging vocabulary challenges. This app offers multiple-choice questions, adaptive learning, and spaced repetition to help you master over 3,000 words. Track your progress, compete on leaderboards, and enjoy a focused learning experience.
- Standardized test format questions
- Adaptive learning and spaced repetition
- Over 3,000 vocabulary words
- Multiple game modes
- Leaderboards and progress tracking
- Handwriting bonus boosters
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Modeled after U.S. standardized test formats, it challenges users with synonym-based multiple-choice questions across five unique modes. Each day, players get 30 minutes to earn points, climb leaderboards, and master over 3,000 words using adaptive learning, spaced repetition, and instant feedback. With analytics, social accountability, and handwriting-powered bonus boosters, ThirtyB makes deep learning fast, focused, and fun. Terms of Use: https://30b.ai/?page_id=71 Privacy Policy: https://30b.ai/?page_id=3#
Screenshots
Verdict
The clearest difference is rating: ThirtyB at 5.0 against RootWords's 4.0. RootWords's advantage is in-app purchases (none vs 2) and iOS requirement (15.1 vs 18.2). On price, review sentiment, ratings volume and update cadence 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
Both are free to download. ThirtyB sells 2 in-app purchases, starting at $5.99 per month. RootWords asks for nothing beyond the download.
ThirtyB holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.
| Parameter | RootWords | ThirtyB |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 — better | 3 |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.2 |
| Further details — not scored | ||
| Size | 35 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Charlotte OConnell | The Tasma Group, LLC |
Customer experience
RootWords
ThirtyB
In-app purchases
RootWords
No in-app purchases
ThirtyB
- Monthly Premium Plan$5.991 Month
- Yearly Premium Plan$59.991 Year
Questions
Is RootWords free?
Is ThirtyB free?
Which has better reviews, RootWords or ThirtyB?
Do RootWords or ThirtyB have ads?
Which is updated more often, RootWords or ThirtyB?
Other comparisons
