# Mental Math Kingdom — Level up: grade 1 to adult

> Level up: grade 1 to adult (iPhone/iPad app by Hiroki Sekimoto.)

- Source: https://appshunter.io/ios/app/mental-math-kingdom/id6787438808 (this page in markdown: same URL + `.md`)
- Developer: [Hiroki Sekimoto](https://appshunter.io/developer/1877884860)
- Category: Education, Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 13 MB
- Languages: American English, Japanese
- Released: 2026-07-09
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/mental-math-kingdom/id6787438808/reviews.md

## What is Mental Math Kingdom?

■ No ads. One-time purchase. No sign-up needed.
A mental math trainer you can hand to your kids with confidence. Your learning records stay on your device, and no account is needed.

■ Your journey on the Math Road
From grade-1 addition to times tables, 2-digit multiplication, and adult-level challenges — climb Levels 1 to 20, collecting stars one step at a time.
- Pick your grade, or take a 1-minute placement test to find your starting point
- Always start where you can win, and level up without frustration
- Grade 1 (addition), Grade 2 (times tables), Grade 3 (division), Grade 4+ (2-digit multiplication), plus brain training for teens and adults. The whole family can use it.

■ Master mental multiplication
Doing "23 x 47" in your head is a real skill — and the top of the Math Road is where you earn it.
- Step-by-Step: break 2-digit multiplication into 3 steps and learn how it works
- Times-Table Ladder: unlock stage by stage and collect stars
- Weak-Spot AI: analyzes your mistakes and targets what you struggle with

■ Gamification that keeps you coming back
- Earn XP and rank up from "Rookie" all the way to "Mental Math King"
- Daily streaks, combos, and a badge collection
- Daily Challenge: the same 10 questions for everyone, every day
- Game Center leaderboards (daily / all-time / time attack / weekly league)

■ Modes for every mood
Practice / Step-by-Step / Daily Challenge / Time Attack / Survival / Review / Weak-Spot AI

■ See your growth
Accuracy and speed trend charts, per-topic stats, and a parent report. Progress you can see keeps motivation high.

■ Mental Math Kingdom Pro (one-time purchase — buy once, use forever)
Unlocks Survival, Weak-Spot Review, unlimited Time Attack, detailed stat charts, and all themes. It is not a subscription.

For ages 6 to adult — kids, students, and grown-ups keeping their minds sharp.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Mental Math Kingdom Pro | $3.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-07-09

Bug fix

### 1.0 — 2026-07-09

No release notes.

## More apps by Hiroki Sekimoto

- [Hoteler Log Hotel Stay Tracker](https://appshunter.io/ios/app/hoteler-log-hotel-stay-tracker/id6759289639)
- [Prime Nerd](https://appshunter.io/ios/app/prime-nerd/id6760544446)
- [Layput](https://appshunter.io/ios/app/layput/id6762073634)
- [すくのび](https://appshunter.io/ios/app/id6763573766)
- [DON'T BLINK: Neon Dodge](https://appshunter.io/ios/app/dont-blink-neon-dodge/id6780188652)

All apps by Hiroki Sekimoto: https://appshunter.io/developer/1877884860

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*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 2026-08-17.*