# King of Math vs Complex(Math Drills)

The clearest difference is in-app purchases: Complex(Math Drills) at none against King of Math's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. King of Math sells 1 one-off in-app purchase. Complex(Math Drills) asks for nothing beyond the download.

King of Math ships an update every 3 weeks, Complex(Math Drills) every 2 weeks. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | King of Math | Complex(Math Drills) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.1K ratings)](https://appshunter.io/ios/app/king-of-math/id473904402/reviews)** | — |
| Number of ratings | **3.1K** | — |
| Positive reviews | 89.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 170 MB | 20 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oddrobo Software AB](https://appshunter.io/developer/423545647) | [郷 田村](https://appshunter.io/developer/1574588679) |

## What reviewers say

### King of Math

[App page](https://appshunter.io/ios/app/king-of-math/id473904402)

Sharpen your mental math skills with this engaging game suitable for all ages. Progress through ranks by solving diverse math problems, earn achievements, and compete globally. It's a fun way to practice math for both kids and adults.

**Highlights:** Mental math practice, Diverse question types, Rank progression system, Achievements and leaderboards, Suitable for family play

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $3.99 | one-time |

**What reviewers like**

- 🚀 Fast pace
- 👍 Fun and challenging
- 👍 Variety of math subjects
- 👍 Helpful for learning and practicing
- 👍 Good for brain training

**What reviewers complain about**

- 🐛 Incorrect answers shown as wrong
- 💰 Requires payment to unlock full version
- 👎 Basic graphics and visuals

**Reported bugs**

- Lost progress and purchases when reinstalling
- Keyboard blocking UI elements

**Requested features**

- More advanced math topics
- Ability to review wrong answers
- Difficulty settings or modes
- More levels and books to progress through
- Explanations or examples for harder questions


### Complex(Math Drills)

[App page](https://appshunter.io/ios/app/complexmath-drills/id6443714418)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is King of Math free?

King of Math is free to download, with in-app purchases available.

### Is Complex(Math Drills) free?

Complex(Math Drills) is free to download, with no in-app purchases.

### Do King of Math or Complex(Math Drills) have ads?

Neither King of Math nor Complex(Math Drills) shows ads.

### Which is updated more often, King of Math or Complex(Math Drills)?

King of Math ships an update every 3 weeks, and Complex(Math Drills) every 2 weeks. Most recently, King of Math was updated on October 19, 2026 and Complex(Math Drills) on October 15, 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.*