# Pearl Diver HD vs Basic Fraction

The clearest difference is review sentiment: Pearl Diver HD at 71% against Basic Fraction's 36%. Pearl Diver HD also leads on in-app purchases (none vs 1) and ads (none vs shown). Basic Fraction's advantage is update cadence (every 3 months vs every 20 months) and iOS requirement (14.4 vs 17.6). On price and device support there is nothing between them.

Both are free to download. Basic Fraction sells 1 one-off in-app purchase. Pearl Diver HD asks for nothing beyond the download.

Pearl Diver HD ships an update every 20 months, Basic Fraction every 3 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Pearl Diver HD | Basic Fraction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/pearl-diver-hd/id364617763/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **71.4% of reviews** | 36.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 12 MB |
| Requires iOS | 17.6 | **14.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [New Mexico State University Board of Regents](https://appshunter.io/developer/337567846) | [Explorer Technologies](https://appshunter.io/developer/290940392) |

## What reviewers say

### Pearl Diver HD

[App page](https://appshunter.io/ios/app/pearl-diver-hd/id364617763)

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

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Basic Fraction

[App page](https://appshunter.io/ios/app/basic-fraction/id460652734)

Master fraction concepts with interactive games and visual aids. Practice addition, subtraction, multiplication, and division, with extensions into algebra, decimals, and percentages. Suitable for children aged 12 and under.

**Highlights:** Identify and compare fractions visually, Simplify and perform fraction arithmetic, Algebraic fraction equations (Find X), Convert fractions to decimals and percentages, Two engaging fraction-based games, Doodling for rough work, Customizable difficulty and display settings

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full upgrade | $2.99 | one-time |


## Frequently asked questions

### Is Pearl Diver HD free?

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

### Is Basic Fraction free?

Basic Fraction is free to download, with in-app purchases available.

### Do Pearl Diver HD or Basic Fraction have ads?

Basic Fraction shows ads; Pearl Diver HD does not.

### Which is updated more often, Pearl Diver HD or Basic Fraction?

Pearl Diver HD ships an update every 20 months, and Basic Fraction every 3 months. Most recently, Pearl Diver HD was updated on November 1, 2026 and Basic Fraction on November 1, 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.*