# ThirtyB vs Clavis

The clearest difference is iOS requirement: Clavis at 16.0 against ThirtyB's 18.2. On price, rating, 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 and Clavis sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for ThirtyB against 5.0 for Clavis. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

ThirtyB ships an update monthly, Clavis every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ThirtyB | Clavis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/thirtyb/id6746424055/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/clavis-study-to-unlock/id6767968738/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 5 MB |
| Requires iOS | 18.2 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Tasma Group, LLC](https://appshunter.io/developer/1816826980) | [Clavis App LLC](https://appshunter.io/developer/1896372867) |

## What reviewers say

### 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 |


### Clavis

[App page](https://appshunter.io/ios/app/clavis-study-to-unlock/id6767968738)

Transform your study materials into bite-sized lessons and quick quizzes. Earn access to your favorite apps by completing focused learning sessions, making scrolling the reward for your study efforts.

**Highlights:** AI-generated lessons from your material, Quick quizzes for reinforcement, App blocking via Screen Time, Earn screen time by studying, Upload notes, PDFs, and images, Progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clavis Pro Monthly | $7.99 | per month |
| Clavis Pro Yearly | $59.99 | per year |


## Frequently asked questions

### Is ThirtyB free?

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

### Is Clavis free?

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

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

ThirtyB and Clavis are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do ThirtyB or Clavis have ads?

Neither ThirtyB nor Clavis shows ads.

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

ThirtyB ships an update monthly, and Clavis every 3 weeks. Most recently, ThirtyB was updated on October 30, 2026 and Clavis on October 31, 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.*