# MathBoard: Mental Arithmetic — Calculator, Steps & Practice

> Calculator, Steps & Practice (iPhone/iPad app by 雷 陈.)

- Source: https://appshunter.io/ios/app/mathboard-mental-arithmetic/id6789140182 (this page in markdown: same URL + `.md`)
- Developer: [雷 陈](https://appshunter.io/developer/1763048890)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-07-22
- Data updated: 2026-07-23
- User reviews in markdown: https://appshunter.io/ios/app/mathboard-mental-arithmetic/id6789140182/reviews.md

## What is MathBoard?

MathBoard is a handwriting-first mental-math practice app. Generate arithmetic worksheets, solve each problem by hand on an iPad whiteboard, and get instant auto-grading, wrong-answer explanations, and printable PDFs.

Pick a ready-made set or build your own:
① Within-10 / within-20 / within-50 / within-100 addition and subtraction
② Two-digit addition and subtraction
③ Multiplication tables, division tables, and mixed × ÷
④ Compare numbers (greater than, less than, equal to)
⑤ Four operations mixed

Work each problem with Apple Pencil or a finger on a per-question whiteboard — line up column working, carry and borrow, draw it out. MathBoard grades instantly, tracks accuracy and time, and saves every wrong answer with the correct solution, your draft, and a step-by-step explanation.

A built-in process calculator lets you enter a two-digit addition or subtraction and see the answer with vertical working and stick-counting visuals — the same show-your-work approach, on demand.

Designed for families:
① Apple Pencil and finger handwriting on every problem
② Auto-grading with accuracy and timing stats
③ Wrong-answer book with explanation and your draft
④ One tap generates a similar set to practice weak spots
⑤ Printable PDF worksheets — student, answer-key, and explanation versions
⑥ Bilingual: English and 简体中文, switchable at runtime
⑦ Fully offline, no ads, no accounts

MathBoard is local-first: worksheets, attempts, wrong answers, and PencilKit drafts stay on the device. Nothing is uploaded.

Core practice is entirely free: all problem types, number ranges, and set sizes (including comparison and two-digit) are available without paying. MathBoard Pro unlocks PDF export, full step-by-step explanations with vertical and visual models, wrong-question drills, learning reports, and batch generation — choose a Monthly or Yearly subscription, or a one-time Lifetime purchase.

Contact: sectojoy@gmail.com

Terms of Service:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Privacy Policy:
https://zelonai.com/app/mathboard/privacy-policy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Subscription | $12.99 | per year |
| Monthly Subscription | $2.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Lifetime Purchase | $24.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-23

No release notes.

## More apps by 雷 陈

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- [SpeedPlayer: Play Slow & Fast](https://appshunter.io/ios/app/speedplayer-play-slow-and-fast/id6762168595)

All apps by 雷 陈: https://appshunter.io/developer/1763048890

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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 2026-07-23.*