# King of Math vs PickKey

The clearest difference is in-app purchases: PickKey at none against King of Math's 1. PickKey also leads on update cadence (every 5 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

King of Math ships an update every 3 weeks, PickKey every 5 days. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | King of Math | PickKey |
| --- | --- | --- |
| 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 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 170 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oddrobo Software AB](https://appshunter.io/developer/423545647) | [Francois Fouqueau](https://appshunter.io/developer/1892826517) |

## 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


### PickKey

[App page](https://appshunter.io/ios/app/pickkey/id6792239990)

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

**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 PickKey free?

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

### Do King of Math or PickKey have ads?

Neither King of Math nor PickKey shows ads.

### Which is updated more often, King of Math or PickKey?

King of Math ships an update every 3 weeks, and PickKey every 5 days. Most recently, King of Math was updated on November 1, 2026 and PickKey on October 29, 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.*