# Know Your USA vs Math Master

The clearest difference is review sentiment: Know Your USA at 100% against Math Master's 45%. Know Your USA also leads on in-app purchases (none vs 5) and iOS requirement (12.2 vs 17.6). Math Master's advantage is price (Free vs $1.99) and rating (4.2 vs 3.0). On ads and device support there is nothing between them.

Math Master is free to download; Know Your USA costs $1.99 up front. Math Master sells 5 in-app purchases, starting at $1.99 per 7 days. Know Your USA asks for nothing beyond the download.

Math Master holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: Math Master has 321 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of Know Your USA's written reviews are positive against 45% of Math Master's, so the app with the better star average is not the one people write more warmly about.

Know Your USA ships an update every 38 months, Math Master every 5 weeks. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Know Your USA | Math Master |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/know-your-usa/id557211549/reviews) | **[4.2 (321 ratings)](https://appshunter.io/ios/app/math-master-4th-grade-fun/id6447770548/reviews)** |
| Number of ratings | 2 | **321** |
| Positive reviews | **100.0% of reviews** | 45.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 49 MB | 38 MB |
| Requires iOS | **12.2** | 17.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [EdWare](https://appshunter.io/developer/554445658) | [Smart Kidz Club Inc.](https://appshunter.io/developer/947115810) |

## What reviewers say

### Know Your USA

[App page](https://appshunter.io/ios/app/know-your-usa/id557211549)

This educational app helps children learn about the United States, including states, capitals, major cities, and geographical features. It offers an interactive atlas and quiz modes to test and reinforce knowledge.

**Highlights:** US States and Capitals Quiz, Explore US Geography, State Flags, Audio Narration, Interactive Atlas, Game Center Support

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Master

[App page](https://appshunter.io/ios/app/math-master-4th-grade-fun/id6447770548)

This app helps 9-10-year-olds master 4th-grade math skills through fun, curriculum-aligned games and activities. It covers a wide range of topics including fractions, decimals, geometry, and data analysis, with practice and test modes to reinforce learning.

**Highlights:** Curriculum-aligned 4th-grade math, Practice and test modes, Scratch pad for problem-solving, Covers fractions, decimals, geometry, Detailed feedback and explanations, No ads or distractions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Practice for Grade 4:1W | $1.99 | per 7 days |
| Math Practice for Grade 4:1M | $2.99 | per month |
| Math Practice for Grade 4:3M | $3.99 | per 3 months |
| Math Practice for Grade 4:6M | $4.99 | per 6 months |
| Lifetime access to all content | $9.99 | one-time |

**What reviewers like**

- 👍 Good for learning and practice
- 👍 Helps identify mistakes
- 👍 Prepares for tests
- 👍 Covers needed topics
- 👍 Fun game for kids

**What reviewers complain about**

- 😞 Repeated payment requests
- 😞 No explanation for wrong answers
- 😞 Boring content
- 😞 Does not help with learning
- 😞 Pictures not loading

**Reported bugs**

- 🐛 Keeps asking to sign up
- 🐛 Elements not clickable
- 🐛 App does not let you do anything
- 🐛 Clicking on items doesn't work

**Requested features**

- Add improper fractions
- Show how to learn math first
- Explain correct answers
- Make app free


## Frequently asked questions

### Is Know Your USA free?

Know Your USA costs $1.99, with no in-app purchases.

### Is Math Master free?

Math Master is free to download, with in-app purchases available.

### Which has better reviews, Know Your USA or Math Master?

Math Master is rated higher. Know Your USA averages 3.0 out of 5 from 2 ratings, while Math Master averages 4.2 from 321 ratings.

### Do Know Your USA or Math Master have ads?

Neither Know Your USA nor Math Master shows ads.

### Which is updated more often, Know Your USA or Math Master?

Know Your USA ships an update every 38 months, and Math Master every 5 weeks. Most recently, Know Your USA was updated on September 30, 2026 and Math Master on October 10, 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.*