King of Math vs Complex(Math Drills)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
King of Math
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.
- Mental math practice
- Diverse question types
- Rank progression system
- Achievements and leaderboards
- Suitable for family play
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Level up your math skills and become the King of Math! King of Math is a fun and fast-paced game for the whole family. The math level is about Middle school math (Grades 6–8), but the game suits anyone who wants to practice and improve their mental math — kids and adults alike. Start as a farmer and climb the ranks by solving math problems and improving your score. Challenge yourself with diverse question types, earn achievements, and compete on global leaderboards! Features: - Fun for both children and adults – perfect for family play - Improve your mental math speed with a variety of challenges - Collect stars, achievements, and compete on leaderboards - Free to get started with addition and subtraction – unlock all content with a one-time purchase Note for schools: A School Edition is also available, with all content unlocked and no in-app purchases ("King of Math: School Ed"). User comments: "I am pleasantly surprised at the different types of questions and how interesting this game is." - York HS math teacher “It will have you sharpening up your mental math skills without you even realizing it.” - The iPhone Mom "As a lifetime mathematician and a math tutor and teacher of over 20 years this is one of the most engaging ways to review math skills that I have ever seen." - App Store review
Complex(Math Drills)
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You can learn Complex offline. Since the question generation and the correctness judgment of the answer are automatically performed, you can work on the drill learning as many times as you like. You can also see tips and answers. Score high in Challenge Mode to improve your rank!!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | King of Math | Complex(Math Drills) |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3.1K ratings) — better | — |
| Positive reviews | 89.6% of reviews | — |
| Number of ratings | 3.1K — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 170 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Oddrobo Software AB | 郷 田村 |
Bugs and requests
King of Math
Reported bugs
2 issues- Lost progress and purchases when reinstalling
- Keyboard blocking UI elements
Requested features
5 requests- 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)
Not enough reviews yet to summarise bugs or requests.
In-app purchases
King of Math
- Full Game$3.99
Complex(Math Drills)
No in-app purchases
Questions
Is King of Math free?
Is Complex(Math Drills) free?
Do King of Math or Complex(Math Drills) have ads?
Which is updated more often, King of Math or Complex(Math Drills)?
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