Comparison

Pearl Diver HD vs Middle School Math 6th Grade

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pearl Diver HD

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
Read full description

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).

About

Middle School Math 6th Grade

Practice 6th-grade math skills with an engaging balloon-popping game. Covers essential topics like multiplication, division, decimals, and geometry. Offers adjustable difficulty, progress tracking, and competitive features to prepare students for tests.

Highlights
  • Balloon-popping math challenges
  • Covers multiplication, division, addition, subtraction
  • Includes number properties, area, volume, statistics
  • Three difficulty levels per topic
  • Leaderboards and achievements
  • Earnable characters and backgrounds
  • Built-in help and Khan Academy links
Read full description

Here's a fun game to practice your 6th Grade Math skills - it's time to get rid of your old flash cards and worksheets. Answer questions by popping balloons as fast as you can. Math topics included are: * Multiplication (0-10) * Division (0-10) * Addition (0-99) * Subtraction (0-99) * Number Properties * Area and Volume * Median Mean Mode * Decimals * Converting Numbers * Converting Units This is a great way to review for standardized tests for 6th grade students in middle school and junior high. For 5th graders, it's your chance to get a head start. * Practice using three levels of difficulty for each topic * Replay levels to improve your scores and speed * Compete with friends with leader boards and achievements * Earn prizes - characters and backgrounds * Review using built-in help and links to Khan Academy * Aligned to Common Core State Standards * Email your progress to your teacher

Screenshots

Pearl Diver HD4 screens
Middle School Math 6th Grade3 screens

Verdict

The call

The clearest difference is rating: Middle School Math 6th Grade at 3.9 against Pearl Diver HD's 1.5. Middle School Math 6th Grade also leads on update cadence (every 2 months vs every 20 months) and ratings volume (466 vs 2). Pearl Diver HD's advantage is in-app purchases (none vs 4) and review sentiment (71% vs 60%). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Middle School Math 6th Grade sells 4 one-off in-app purchases. Pearl Diver HD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Middle School Math 6th Grade holds the better App Store score, 3.9 against 1.5. That said, the two scores are not equally well evidenced: Middle School Math 6th Grade has 466 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 71% of Pearl Diver HD's written reviews are positive against 60% of Middle School Math 6th Grade's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Pearl Diver HD ships an update every 20 months, Middle School Math 6th Grade every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard7 real differences · 3 level
Pearl Diver HD versus Middle School Math 6th Grade: the parameters behind the verdict, then further details
ParameterPearl Diver HDMiddle School Math 6th Grade
PriceFreeFree
Rating1.5 (2 ratings)3.9 (466 ratings) — better
Positive reviews71.4% of reviews — better60.0% of reviews
Number of ratings2466 — better
Update frequencyEvery 20 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.68.0 — better
Further details — not scored
Size28 MB43 MB
Age rating4+4+
DeveloperNew Mexico State University Board of RegentsMonkey In The Middle Apps LLC

Customer experience

Pearl Diver HD

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

Middle School Math 6th Grade

All ratings463 ratings
Positive69.3%
Neutral8.2%
Negative22.5%
Written reviews85 reviews
Positive60.0%
Neutral4.7%
Negative35.3%

Bugs and requests

Pearl Diver HD

Not enough reviews yet to summarise bugs or requests.

Middle School Math 6th Grade

Reported bugs

2 issues
  • Incorrect answers sometimes marked as correct
  • Visibility issues with text and background

Requested features

3 requests
  • More challenging math problems for 6th grade level
  • Ability to unlock additional content without paying
  • Improved graphics and design

In-app purchases

None

Pearl Diver HD

No in-app purchases

4 purchases

Middle School Math 6th Grade

One-time4
  • 100 Bananas$0.99
  • Pack of 6 More Quizzes$0.99
  • 500 Bananas$2.99
Show 1 more
  • 1000 Bananas$4.99

Questions

Is Pearl Diver HD free?
Pearl Diver HD is free to download, with no in-app purchases.
Is Middle School Math 6th Grade free?
Middle School Math 6th Grade is free to download, with in-app purchases available.
Which has better reviews, Pearl Diver HD or Middle School Math 6th Grade?
Middle School Math 6th Grade is rated higher. Pearl Diver HD averages 1.5 out of 5 from 2 ratings, while Middle School Math 6th Grade averages 3.9 from 466 ratings.
Do Pearl Diver HD or Middle School Math 6th Grade have ads?
Neither Pearl Diver HD nor Middle School Math 6th Grade shows ads.
Which is updated more often, Pearl Diver HD or Middle School Math 6th Grade?
Pearl Diver HD ships an update every 20 months, and Middle School Math 6th Grade every 2 months. Most recently, Pearl Diver HD was updated on November 1, 2026 and Middle School Math 6th Grade on November 6, 2026.

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