# Pearl Diver HD vs Arithmetic Wiz

The clearest difference is rating: Arithmetic Wiz at 2.0 against Pearl Diver HD's 1.5. Arithmetic Wiz also leads on update cadence (every 4 months vs every 20 months) and iOS requirement (15.0 vs 17.6). Pearl Diver HD's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment, ratings volume and device support there is nothing between them.

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

Arithmetic Wiz holds the better App Store score, 2.0 against 1.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 71% of Pearl Diver HD's written reviews are positive against 67% of Arithmetic Wiz's, so the app with the better star average is not the one people write more warmly about.

Pearl Diver HD ships an update every 20 months, Arithmetic Wiz every 4 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Pearl Diver HD | Arithmetic Wiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/pearl-diver-hd/id364617763/reviews) | **[2.0 (1 ratings)](https://appshunter.io/ios/app/arithmetic-wiz-math-drills/id506569246/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | **71.4% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 10 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [New Mexico State University Board of Regents](https://appshunter.io/developer/337567846) | [The Rocket Studio](https://appshunter.io/developer/445439580) |

## 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


### Arithmetic Wiz

[App page](https://appshunter.io/ios/app/arithmetic-wiz-math-drills/id506569246)

This app makes practicing arithmetic fun for children. It offers drills for addition, subtraction, multiplication, and division, with features like timed challenges, progress tracking, and global leaderboards. Kids can earn trophies and stars for achievements.

**Highlights:** Arithmetic drills (4 operations), Timed challenges, Performance history tracking, Trophy and star rewards, Global leaderboards and rankings, Speed and score tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Arithmetic Wiz All 14 Levels | $3.99 | one-time |


## Frequently asked questions

### Is Pearl Diver HD free?

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

### Is Arithmetic Wiz free?

Arithmetic Wiz is free to download, with in-app purchases available.

### Which has better reviews, Pearl Diver HD or Arithmetic Wiz?

Arithmetic Wiz is rated higher. Pearl Diver HD averages 1.5 out of 5 from 2 ratings, while Arithmetic Wiz averages 2.0 from 1 ratings.

### Do Pearl Diver HD or Arithmetic Wiz have ads?

Arithmetic Wiz shows ads; Pearl Diver HD does not.

### Which is updated more often, Pearl Diver HD or Arithmetic Wiz?

Pearl Diver HD ships an update every 20 months, and Arithmetic Wiz every 4 months. Most recently, Pearl Diver HD was updated on November 1, 2026 and Arithmetic Wiz on November 6, 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.*