# Speed math:Mental arithmetic — Primary Addition Subtraction

> Primary Addition Subtraction (iPhone/iPad app by 向军 贾.)

- Source: https://appshunter.io/ios/app/speed-mathmental-arithmetic/id1092366930 (this page in markdown: same URL + `.md`)
- Developer: [向军 贾](https://appshunter.io/developer/788691093)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 12.0 · 16 MB
- Languages: American English, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hebrew, Indonesian and 15 more
- Released: 2016-04-05
- Data updated: 2026-07-07
- User reviews in markdown: https://appshunter.io/ios/app/speed-mathmental-arithmetic/id1092366930/reviews.md

## What is Speed math?

Educational games for math.
The calculation of addition subtraction multiplication division.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock function and off AD | $3.99 | one-time |



## Version history (last 5 releases)

### 1.2.0 — 2025-05-29

Update the question bank and optimize the UI.

### 1.1.3 — 2024-04-17

Fix the display bug.

### 1.1.2 — 2024-04-03

UI and performance optimization.

### 1.1.1 — 2022-10-28

UI and performance optimizations.

### 1.1.0 — 2022-09-20

UI and performance optimizations.

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- [1st Grade Math Fun](https://appshunter.io/ios/app/1st-grade-math-fun/id804738655)
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All apps by 向军 贾: https://appshunter.io/developer/788691093

## Related topics

[arithmetic mental](https://appshunter.io/ios/topics/arithmetic-mental)

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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 2026-07-07.*