# RootWords vs ThirtyB

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.

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.

## The numbers

| Metric | RootWords | ThirtyB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/rootwords/id6503809963/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/thirtyb/id6746424055/reviews)** |
| Number of ratings | **4** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 22 MB |
| Requires iOS | **15.1** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Charlotte OConnell](https://appshunter.io/developer/1258048613) | [The Tasma Group, LLC](https://appshunter.io/developer/1816826980) |

## What reviewers say

### RootWords

[App page](https://appshunter.io/ios/app/rootwords/id6503809963)

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.

**Highlights:** Build words from root components, Learn word meanings, Improve vocabulary, Enhance reading skills, Test preparation aid

**Features:** macOS Compatibility

**In-app purchases:** none


### ThirtyB

[App page](https://appshunter.io/ios/app/thirtyb/id6746424055)

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.

**Highlights:** Standardized test format questions, Adaptive learning and spaced repetition, Over 3,000 vocabulary words, Multiple game modes, Leaderboards and progress tracking, Handwriting bonus boosters

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Plan | $5.99 | per month |
| Yearly Premium Plan | $59.99 | per year |


## Frequently asked questions

### Is RootWords free?

RootWords is free to download, with no in-app purchases.

### Is ThirtyB free?

ThirtyB is free to download, with in-app purchases available.

### Which has better reviews, RootWords or ThirtyB?

ThirtyB is rated higher. RootWords averages 4.0 out of 5 from 4 ratings, while ThirtyB averages 5.0 from 3 ratings.

### Do RootWords or ThirtyB have ads?

Neither RootWords nor ThirtyB shows ads.

### Which is updated more often, RootWords or ThirtyB?

RootWords ships an update monthly, and ThirtyB monthly. Most recently, RootWords was updated on October 2, 2026 and ThirtyB on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*