# Math Queen / Math King vs Circuit Design

The clearest difference is in-app purchases: Math Queen / Math King at none against Circuit Design's 3. Circuit Design's advantage is update cadence (every 2 months vs every 30 months) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Circuit Design sells 3 in-app purchases, starting at $7.99 per month. Math Queen / Math King asks for nothing beyond the download.

Math Queen / Math King ships an update every 30 months, Circuit Design every 2 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Math Queen / Math King | Circuit Design |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 2 months** |
| Size | 11 MB | 5 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [Tu Anh Do](https://appshunter.io/developer/738947045) |

## What reviewers say

### Math Queen / Math King

[App page](https://appshunter.io/ios/app/math-queen-math-king/id6477328464)

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

**In-app purchases:** none


### Circuit Design

[App page](https://appshunter.io/ios/app/circuit-design/id6776538242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circuit Design Premium Monthly | $7.99 | per month |
| Circuit Design Premium Yearly | $29.99 | per year |
| Circuit Design Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Math Queen / Math King free?

Math Queen / Math King is free to download, with no in-app purchases.

### Is Circuit Design free?

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

### Do Math Queen / Math King or Circuit Design have ads?

Neither Math Queen / Math King nor Circuit Design shows ads.

### Which is updated more often, Math Queen / Math King or Circuit Design?

Math Queen / Math King ships an update every 30 months, and Circuit Design every 2 months. Most recently, Math Queen / Math King was updated on November 4, 2026 and Circuit Design 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.*