# Math Masters Jr. vs Thomas Keith

The clearest difference is in-app purchases: Thomas Keith at none against Math Masters Jr.'s 11. Thomas Keith also leads on iOS requirement (13.0 vs 15.0). Math Masters Jr.'s advantage is update cadence (every 3 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Math Masters Jr. sells 11 in-app purchases, starting at $0.99 per month. Thomas Keith asks for nothing beyond the download.

Math Masters Jr. ships an update every 3 weeks, Thomas Keith every 4 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Math Masters Jr. | Thomas Keith |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 40 MB | 64 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SlimStampen B.V.](https://appshunter.io/developer/1717406198) | [Thomas Keith Limited](https://appshunter.io/developer/1719167924) |

## What reviewers say

### Math Masters Jr.

[App page](https://appshunter.io/ios/app/math-masters-jr/id6472655106)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription Grade 4 | $0.99 | per month |
| Monthly Subscription Grade 3 | $0.99 | per month |
| Month Subscription All Grades | $3.99 | per month |
| Yearly Subscription Grade 2 | $6.99 | per year |
| Yearly Subscription Grade 4 | $6.99 | per year |
| Yearly Subscription Grade 3 | $7.99 | per year |
| Yearly Subscription all Grades | $14.99 | per year |
| Unlock Grade 2 Forever | $9.99 | one-time |
| Unlock Grade 3 Forever | $9.99 | one-time |
| Unlock Grade 4 Forever | $9.99 | one-time |
| Lifetime, all Grades | $24.99 | one-time |


### Thomas Keith

[App page](https://appshunter.io/ios/app/thomas-keith/id6473549399)

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

**In-app purchases:** none


## Frequently asked questions

### Is Math Masters Jr. free?

Math Masters Jr. is free to download, with in-app purchases available.

### Is Thomas Keith free?

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

### Do Math Masters Jr. or Thomas Keith have ads?

Neither Math Masters Jr. nor Thomas Keith shows ads.

### Which is updated more often, Math Masters Jr. or Thomas Keith?

Math Masters Jr. ships an update every 3 weeks, and Thomas Keith every 4 months. Most recently, Math Masters Jr. was updated on October 18, 2026 and Thomas Keith on October 10, 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.*