# Math Duel: Mental Math Battle — Brain puzzles and live duels

> Brain puzzles and live duels (iPhone/iPad app by HAO CHANG KUO.)

- Source: https://appshunter.io/ios/app/math-duel-mental-math-battle/id6770234325 (this page in markdown: same URL + `.md`)
- Developer: [HAO CHANG KUO](https://appshunter.io/developer/1735524069)
- Category: Games, Puzzle, Trivia
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 53 MB
- Languages: American English, Japanese, Korean, Chinese (Traditional, Taiwan)
- Released: 2026-05-20
- Data updated: 2026-06-24
- User reviews in markdown: https://appshunter.io/ios/app/math-duel-mental-math-battle/id6770234325/reviews.md

## What is Math Duel?

Math Duel is a math puzzle game built around mental calculation, stage progression, timed challenges, and multiplayer battles.

Start with simple problems, sharpen your speed and accuracy, then take on harder stages as you improve. Play solo, race against the clock, or enter a multiplayer room to compete with another player in real time.

Features:
- Math stages that gradually raise the difficulty
- Timed challenges for speed and accuracy training
- Multiplayer room battles with real-time solving
- Archive collection content inspired by numbers and theorems
- Strategic items such as shuffle, auto-place, and trap removal

Math Duel is made for players who enjoy math games, mental math, brain training, puzzle challenges, and competitive problem solving.

Ready for your next math duel?

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Energy Potion Pack | $0.99 | one-time |
| Basic Tool Pack | $0.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Standard Pass | $2.99 | one-time |
| Advanced Pass | $3.99 | one-time |
| Advanced Pass Upgrade | $0.99 | one-time |



## Version history (last 3 releases)

### 1.0.2 — 2026-06-16

Settlement Screen Improvements and Multi-language Support Updates

### 1.0.1 — 2026-05-22

Improved in-game touch feedback to prevent buttons from staying highlighted after taps.
Adjusted the submit answer button position to avoid overlap with bottom banner ads.
Refined the start screen enter button display.
Improved layout stability and interaction smoothness on supported iPhone devices.

### 1.0.0 — 2026-05-20

No release notes.

## More apps by HAO CHANG KUO

- [ShareSlice - Split Bills](https://appshunter.io/ios/app/shareslice-split-bills/id6479315513)
- [Draw Lots Tool](https://appshunter.io/ios/app/draw-lots-tool/id6495065678)
- [Water Purifier Diary](https://appshunter.io/ios/app/water-purifier-diary/id6761051602)

All apps by HAO CHANG KUO: https://appshunter.io/developer/1735524069

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-24.*