# 2nd Grade Math Challenge vs Chaipang Subtraction

2nd Grade Math Challenge and Chaipang Subtraction are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 2nd Grade Math Challenge sells 1 one-off in-app purchase and Chaipang Subtraction sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

2nd Grade Math Challenge ships an update every 5 months, Chaipang Subtraction every 3 months. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 2nd Grade Math Challenge | Chaipang Subtraction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/2nd-grade-math-challenge/id1567478828/reviews)** | — |
| Number of ratings | **16** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 36 MB | 136 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IT365 Solutions Inc](https://appshunter.io/developer/1531416759) | [Wecref Co., Ltd.](https://appshunter.io/developer/1570555584) |

## What reviewers say

### 2nd Grade Math Challenge

[App page](https://appshunter.io/ios/app/2nd-grade-math-challenge/id1567478828)

Test your 2nd-grade math skills with 100 engaging questions and puzzles. Track your progress, share your score with a personalized certificate, and challenge friends and family to friendly competitions. Step-by-step solutions are available for better understanding.

**Highlights:** 100 math questions and levels, Includes math puzzles, Create and share score certificates, Challenge friends and family, Step-by-step solution guides

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all Ads from Math 2 | $0.99 | one-time |


### Chaipang Subtraction

[App page](https://appshunter.io/ios/app/chaipang-subtraction/id1614401871)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 차이팡 뺄셈 광고제거 | $2.99 | one-time |


## Frequently asked questions

### Is 2nd Grade Math Challenge free?

2nd Grade Math Challenge is free to download, with in-app purchases available.

### Is Chaipang Subtraction free?

Chaipang Subtraction is free to download, with in-app purchases available.

### Do 2nd Grade Math Challenge or Chaipang Subtraction have ads?

Neither 2nd Grade Math Challenge nor Chaipang Subtraction shows ads.

### Which is updated more often, 2nd Grade Math Challenge or Chaipang Subtraction?

2nd Grade Math Challenge ships an update every 5 months, and Chaipang Subtraction every 3 months. Most recently, 2nd Grade Math Challenge was updated on October 21, 2026 and Chaipang Subtraction on October 7, 2026.

---

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