# Pearl Diver HD — Number line math game

> Educational number line math game for elementary and middle school students. (iPhone/iPad app by New Mexico State University Board of Regents.)

- Source: https://appshunter.io/ios/app/pearl-diver-hd/id364617763 (this page in markdown: same URL + `.md`)
- Developer: [New Mexico State University Board of Regents](https://appshunter.io/developer/337567846)
- Category: Education, Games
- Price: Free
- Rating: 1.50/5 from 2 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 28 MB
- Languages: American English, European Spanish
- Released: 2010-04-01
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pearl-diver-hd/id364617763/reviews.md

## What is Pearl Diver HD?

Throw on your diving helmet, and head into the depths of the sea!  Master the number line, including fractions and decimals, while gathering beautiful pearls. Will you find the elusive black pearl?

• Ideal for elementary and middle school students, grades 3-8.

Developed by mathematics educators, researchers, and game developers at the Learning Games Lab at New Mexico State University.  Games developed by the Learning Games Lab undergo a rigorous instructional design process, extensive user testing, and input from learners, teachers, and researchers.  

Pearl Diver addresses Common Core standards relevant to the number line and properties of numbers, including:
  •  Understanding numbers, ways of representing numbers, and number systems.
 • Understanding and representing commonly used fractions.
 •  Understanding fractions as part of unit wholes and as locations on number lines.
 •  Comparing and ordering fractions, and finding their approximate locations on the number line.

For information about learning effectiveness, see the Math Snacks Research Summary: http://mathsnacks.com/research.html

For information about the NMSU Learning Games Lab, visit http://learninggameslab.org.

Developed as part of the "Math Snacks" initiative.  Other free animations, activities, and games are available through the Math Snacks web site at http://mathsnacks.org.

Math Snack materials were developed with support from the National Science Foundation (0918794). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Some materials were originally prototyped or discussed as part of a cooperative agreement from the U.S. Department of Education (U295A050004).

## Key features

- Number line mastery
- Fractions and decimals
- Common Core standards alignment
- Progress tracking
- Educational game design
- Pearl collection gameplay

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/pearl-diver-hd/id364617763/reviews.md

### 1/5 — Aefnvhaefuvofwe

*2020-08-13, version 3.0*

Uogbcersucohbeafcuohwbefvuohwef

### 5/5 — Good app, kids enjoy

*2015-02-19, version 2.5*

5th grade Special Ed teacher: students work diligently and gain understanding of concept. Becomes increasingly challenging as they advance. The timer is a deterrent to my more nervous students, making this too stressful for some to benefit from. Also, starting over invests too much time in easiest level for those who can't pick up speed for physical or neurological reasons. I recommend both Pearl Diver and Lobster Diver.

### 4/5 — SUPER FUN!!!!!

*2015-01-13, version 2.5*

This game is really fun. It teaches you your halfs and 1/3.

### 5/5 — Pearl diving

*2012-09-20, version 2.1*

I love this game everyone should play this game.

### 1/5 — Doesn't work

*2011-02-11, version 2.1*

Tis app and the similar lobster diver both crash every time we tap the play button.

### 5/5 — Success

*2010-09-26, version 0*

My middle-school students really enjoyed it. I'd love to see more apps like this one. Because the app is so visual & colorful, it really held their attention. Perfect for its targeted age range.

### 5/5 — A great way to learn math

*2010-09-16, version 0*

This is a great math game that teaches the concept of the number line. This is a definite upgrade from the original iPhone app - the graphics have all been re-done in higher resolution, and this game looks great. The controls are nice and responsive, and best of all, it's free. What more could you want? I would strongly recommend this game if it cost 2 or 3 dollars, but at free it's a no-brainer - you really ought to pick this one up!

## Frequently asked questions about Pearl Diver HD

### What age group is Pearl Diver HD for?

Pearl Diver HD is ideal for elementary and middle school students, specifically grades 3-8. The app is rated for ages 4 and up, making it accessible for a wide range of young learners.

### What math concepts does Pearl Diver HD teach?

Pearl Diver HD focuses on mastering the number line, including understanding and representing commonly used fractions, fractions as part of unit wholes, and their locations on the number line. It also covers comparing and ordering fractions and finding their approximate locations.

### Is Pearl Diver HD aligned with educational standards?

Yes, Pearl Diver HD addresses Common Core standards relevant to the number line and properties of numbers. It was developed by mathematics educators and researchers, undergoing rigorous instructional design and user testing.

### Does Pearl Diver HD have ads?

No, Pearl Diver HD is ad-free. The app was developed with support from the National Science Foundation and the U.S. Department of Education, focusing on educational content without advertisements.

### What devices can I play Pearl Diver HD on?

Pearl Diver HD is available for both iPhone and iPad devices. This allows students to learn on their preferred Apple mobile device.

### How often is Pearl Diver HD updated?

The latest version of Pearl Diver HD is 4.1, and it was last updated on March 24, 2025. This indicates active development and support for the application.

### Where can I find more information about the learning effectiveness of Pearl Diver HD?

You can find more information about the learning effectiveness in the Math Snacks Research Summary, available at http://mathsnacks.com/research.html. This resource provides details on the research behind the educational games.

### Is Pearl Diver HD available in other languages?

The provided data does not specify language availability beyond English. However, the app is part of the 'Math Snacks' initiative, which may offer additional resources on their website.

## Version history (last 5 releases)

### 4.1 — 2025-03-24

font update

### 3.0 — 2016-03-08

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes.

### 2.5 — 2014-07-31

* Retina graphics. 
* Widescreen iPhone support. 
* Improved gameplay. 
* Spanish-language localization.

### 2.4 — 2013-04-02

Fixed bug that prevents resuming game when paused.

### 2.3 — 2012-12-04

Removed OpenFeint support, since the service is shutting down.

## Apps similar to Pearl Diver HD

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Quick Math - Mental Arithmetic](https://appshunter.io/ios/app/quick-math-mental-arithmetic/id1105735200) | 4.2 (853) | Free | Education |
| [Subtraction with regrouping](https://appshunter.io/ios/app/subtraction-with-regrouping/id838762880) | — | $0.99 | Education |
| [Baby Learn - GREEK](https://appshunter.io/ios/app/baby-learn-greek/id1069774220) | — | Free | Education |
| [Show Me! (Mutasd!)](https://appshunter.io/ios/app/show-me-mutasd/id1097985820) | 3.0 (9) | Free | Education |
| [Sum and Difference of 2 Terms](https://appshunter.io/ios/app/sum-and-difference-of-2-terms/id1439788276) | — | Free | Education |
| [Bamba Airport](https://appshunter.io/ios/app/bamba-airport/id905232680) | 3.8 (5) | $2.99 | Education |

## More apps by New Mexico State University Board of Regents

- [Pearl Diver: Number Line Math](https://appshunter.io/ios/app/pearl-diver-number-line-math/id337567843)
- [Math Snacks Video](https://appshunter.io/ios/app/math-snacks-video/id341673343)
- [Lobster Diver](https://appshunter.io/ios/app/lobster-diver/id416577542)
- [Lobster Diver HD](https://appshunter.io/ios/app/lobster-diver-hd/id416610863)
- [Math Snacks HD](https://appshunter.io/ios/app/math-snacks-hd/id440524629)

All apps by New Mexico State University Board of Regents: https://appshunter.io/developer/337567846

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*