# Pearl Diver vs Math Master

The clearest difference is rating: Pearl Diver at 5.0 against Math Master's 4.2. Pearl Diver also leads on in-app purchases (none vs 5) and review sentiment (76% vs 45%). Math Master's advantage is update cadence (every 5 weeks vs every 20 months) and ratings volume (321 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Math Master sells 5 in-app purchases, starting at $1.99 per 7 days. Pearl Diver asks for nothing beyond the download.

Pearl Diver holds the better App Store score, 5.0 against 4.2. 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 point the same way: 76% of Pearl Diver's written reviews are positive against 45% of Math Master's.

Pearl Diver ships an update every 20 months, Math Master every 5 weeks. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Pearl Diver | Math Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pearl-diver-number-line-math/id337567843/reviews)** | [4.2 (321 ratings)](https://appshunter.io/ios/app/math-master-4th-grade-fun/id6447770548/reviews) |
| Number of ratings | 2 | **321** |
| Positive reviews | **76.2% of reviews** | 45.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 38 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [New Mexico State University Board of Regents](https://appshunter.io/developer/337567846) | [Smart Kidz Club Inc.](https://appshunter.io/developer/947115810) |

## What reviewers say

### Pearl Diver

[App page](https://appshunter.io/ios/app/pearl-diver-number-line-math/id337567843)

Dive into the ocean to master the number line, including fractions and decimals, by collecting pearls. This educational game is designed by experts to align with Common Core standards for grades 3-8.

**Highlights:** Number line mastery, Fractions and decimals, Common Core alignment, Progress tracking, Educational game design

**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 Pearl Diver free?

Pearl Diver is free to download, with no in-app purchases.

### Is Math Master free?

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

### Which has better reviews, Pearl Diver or Math Master?

Pearl Diver is rated higher. Pearl Diver averages 5.0 out of 5 from 2 ratings, while Math Master averages 4.2 from 321 ratings.

### Do Pearl Diver or Math Master have ads?

Neither Pearl Diver nor Math Master shows ads.

### Which is updated more often, Pearl Diver or Math Master?

Pearl Diver ships an update every 20 months, and Math Master every 5 weeks. Most recently, Pearl Diver was updated on September 18, 2026 and Math Master on September 23, 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.*