# Mentamic: Turn-based math game — Build equations on a 9x9 board

> Build equations on a 9x9 board (iPhone/iPad app by Lars Tofte.)

- Source: https://appshunter.io/ios/app/mentamic-turn-based-math-game/id6759834254 (this page in markdown: same URL + `.md`)
- Developer: [Lars Tofte](https://appshunter.io/developer/1881067259)
- Category: Entertainment, Education
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 15.1 · 52 MB
- Languages: American English, Danish, Dutch, Finnish, French (France), German (Germany), Icelandic, Italian, Norwegian Bokmål, Norwegian Nynorsk and 3 more
- Released: 2026-08-06
- Data updated: 2026-08-09
- User reviews in markdown: https://appshunter.io/ios/app/mentamic-turn-based-math-game/id6759834254/reviews.md

## What is Mentamic?

Mentamic is a strategic math and number game where you build valid equations on a 9×9 board using numbers, operators, equals signs, and parentheses.

What sets Mentamic apart from many other math apps is that you do not just compete against yourself. You can challenge friends, invite new players with a link, face random opponents, and improve your rating.

In the app, you can:

play solo and 2-player games
invite friends via SMS or email
find and add other players
chat with your opponent
choose thinking time per move from 10 minutes to 3 days
track ELO rating and solo highscores
use +, -, ×, ÷, powers, and nth roots
continue ongoing games later
remove ads with Premium

Every move is about strategy, mental arithmetic, and timing. Build expressions that intersect, use parentheses wisely, and maximize your score on the board.

Mentamic is for anyone who enjoys brain training, number games, logic games, and competition. Whether you want to practice on your own or play against others, you get a math game with depth, social interaction, and a competitive edge.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Mental Arithmetic Supporter, annual | $7.99 | per year |



## Version history (last 2 releases)

### 1.0.1 — 2026-08-08

Bug fixes and improved stability

### 1.0 — 2026-07-29

No release notes.

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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 2026-08-09.*