# Speed math vs 口算之王

The clearest difference is ads: 口算之王 at none against Speed math's shown. 口算之王 also leads on update cadence (monthly vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Speed math sells 1 one-off in-app purchase and 口算之王 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Speed math ships an update every 11 months, 口算之王 monthly. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Speed math | 口算之王 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Monthly** |
| Size | 16 MB | 171 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [向军 贾](https://appshunter.io/developer/788691093) | [Kunming Jianet Technology Co., Ltd.](https://appshunter.io/developer/1465682556) |

## What reviewers say

### Speed math

[App page](https://appshunter.io/ios/app/speed-mathmental-arithmetic/id1092366930)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### 口算之王

[App page](https://appshunter.io/ios/app/id1479856216)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6元解锁口算跑酷-阳光飞驰 | $0.99 | one-time |
| 6元解锁口算跑酷-黑夜狂奔 | $0.99 | one-time |
| 6元解锁口算金币大亨 | $0.99 | one-time |
| 6元解锁口算射箭场 | $0.99 | one-time |
| 6元解锁口算星球探险 | $0.99 | one-time |
| 6元解锁补数大挑战 | $0.99 | one-time |
| 6元解锁口算消灭坦克 | $0.99 | one-time |
| 6元解锁算式消消乐 | $0.99 | one-time |
| 6元解锁口算吃糖果 | $0.99 | one-time |
| 12元购买120颗钻石 | $1.99 | one-time |


## Frequently asked questions

### Is Speed math free?

Speed math is free to download, with in-app purchases available.

### Is 口算之王 free?

口算之王 is free to download, with in-app purchases available.

### Do Speed math or 口算之王 have ads?

Speed math shows ads; 口算之王 does not.

### Which is updated more often, Speed math or 口算之王?

Speed math ships an update every 11 months, and 口算之王 monthly. Most recently, Speed math was updated on October 4, 2026 and 口算之王 on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*