# 10th Grade Math Challenge vs Duo ABC

The clearest difference is update cadence: Duo ABC at every 3 weeks against 10th Grade Math Challenge's every 7 months. Duo ABC also leads on ratings volume (21 vs 5). 10th Grade Math Challenge's advantage is iOS requirement (13.0 vs 15.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. 10th Grade Math Challenge sells 1 one-off in-app purchase and Duo ABC sells 8 in-app purchases, starting at $1.49 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for 10th Grade Math Challenge against 4.6 for Duo ABC. Both are backed by a comparable volume of ratings — 5 and 21 respectively.

10th Grade Math Challenge ships an update every 7 months, Duo ABC every 3 weeks. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 10th Grade Math Challenge | Duo ABC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/10th-grade-math-challenge/id1537491277/reviews) | **[4.6 (21 ratings)](https://appshunter.io/ios/app/duo-abc/id1594001123/reviews)** |
| Number of ratings | 5 | **21** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 158 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IT365 Solutions Inc](https://appshunter.io/developer/1531416759) | [nguyen thanh](https://appshunter.io/developer/1481436893) |

## What reviewers say

### 10th Grade Math Challenge

[App page](https://appshunter.io/ios/app/10th-grade-math-challenge/id1537491277)

Test your knowledge with 10th-grade level math questions and puzzles. Track your progress, share your score with a certificate, and challenge friends and family. Detailed solutions are available for better understanding.

**Highlights:** 100 math questions/levels, Math puzzles, Score certificate creation, Challenge friends and family, Step-by-step solutions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all Ads from Math 10 | $0.99 | one-time |


### Duo ABC

[App page](https://appshunter.io/ios/app/duo-abc/id1594001123)

This app helps 10th-grade students master English with interactive tests and lessons. It offers offline access and allows for self-paced learning, making it a convenient tool for academic success.

**Highlights:** Offline Access, Interactive Tests, Self-paced Learning, Teacher-Friendly Interface, Grade 10 English Mastery

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Months VIP | $1.49 | per 3 months |
| Learning Premium Monthly Plan | $1.99 | per month |
| One Month VIP | $4.99 | per month |
| Learning Premium HalfYear Plan | $5.99 | per 6 months |
| Learning Premium Annual Plan | $9.99 | per year |
| 1 Year VIP | $24.99 | per year |
| Six Months VIP | $24.99 | per 6 months |
| No ads Pack | $14.99 | one-time |


## Frequently asked questions

### Is 10th Grade Math Challenge free?

10th Grade Math Challenge is free to download, with in-app purchases available.

### Is Duo ABC free?

Duo ABC is free to download, with in-app purchases available.

### Which has better reviews, 10th Grade Math Challenge or Duo ABC?

Duo ABC is rated higher. 10th Grade Math Challenge averages 4.6 out of 5 from 5 ratings, while Duo ABC averages 4.6 from 21 ratings.

### Do 10th Grade Math Challenge or Duo ABC have ads?

Neither 10th Grade Math Challenge nor Duo ABC shows ads.

### Which is updated more often, 10th Grade Math Challenge or Duo ABC?

10th Grade Math Challenge ships an update every 7 months, and Duo ABC every 3 weeks. Most recently, 10th Grade Math Challenge was updated on October 22, 2026 and Duo ABC on October 27, 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.*