Comparison

Pearl Diver HD vs First Grade Math Challenge

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

First Grade Math Challenge

Practice addition and subtraction skills with a barnyard theme. Collect and learn about animals by completing timed math challenges, unlocking fun facts and sounds. An in-app upgrade offers more levels and animals permanently.

Highlights
  • Addition & Subtraction practice
  • Barnyard animal collection
  • Timed math challenges
  • Learn animal facts
  • Animal sounds
  • Gradually increasing difficulty
Features
Read full description

Practice math skills and learn about animals around the barn! * Addition & Subtraction Edition is perfect for grades K-3 but still challenging and fun for everyone, even adults! * Collect and learn about barnyard animals by completing timed math challenges * Innovative dual learning opportunity, learn interesting facts about different animals while practicing math skills! * Tons of fun facts about each animal to learn and share with your friends! * Listen to each animal! * No annoying ads to distract from game play! This game is perfect for a First Grade, Second Grade, or Third Grade student! The levels gradually increase in difficulty as the game progresses.

Screenshots

Pearl Diver HD4 screens
First Grade Math Challenge4 screens

Verdict

The call

The clearest difference is rating: First Grade Math Challenge at 4.0 against Pearl Diver HD's 1.5. First Grade Math Challenge also leads on update cadence (every 2 months vs every 20 months) and review sentiment (80% vs 71%). Pearl Diver HD's advantage is monetization model (free vs free with in-app purchases). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

First Grade Math Challenge holds the better App Store score, 4.0 against 1.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 71% of Pearl Diver HD's written reviews are positive against 80% of First Grade Math Challenge's.

UpkeepUpdate frequency

Pearl Diver HD ships an update every 20 months, First Grade Math Challenge every 2 months. Both last shipped on November 1, 2026.

Scorecard5 real differences · 5 level
Pearl Diver HD versus First Grade Math Challenge: the parameters behind the verdict, then further details
ParameterPearl Diver HDFirst Grade Math Challenge
PriceFreeFree
Rating1.5 (2 ratings)4.0 (4 ratings) — better
Positive reviews71.4% of reviews80.0% of reviews — better
Number of ratings24 — better
Update frequencyEvery 20 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size28 MB41 MB
Age rating4+4+
DeveloperNew Mexico State University Board of RegentsEric Marschner

Customer experience

Pearl Diver HD

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

First Grade Math Challenge

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews15 reviews
Positive80.0%
Neutral6.7%
Negative13.3%

In-app purchases

None

Pearl Diver HD

No in-app purchases

None

First Grade Math Challenge

No in-app purchases

Questions

Is Pearl Diver HD free?
Pearl Diver HD is free to download, with no in-app purchases.
Is First Grade Math Challenge free?
First Grade Math Challenge is free to download, with no in-app purchases.
Which has better reviews, Pearl Diver HD or First Grade Math Challenge?
First Grade Math Challenge is rated higher. Pearl Diver HD averages 1.5 out of 5 from 2 ratings, while First Grade Math Challenge averages 4.0 from 4 ratings.
Do Pearl Diver HD or First Grade Math Challenge have ads?
Neither Pearl Diver HD nor First Grade Math Challenge shows ads.
Which is updated more often, Pearl Diver HD or First Grade Math Challenge?
Pearl Diver HD ships an update every 20 months, and First Grade Math Challenge every 2 months. Most recently, Pearl Diver HD was updated on November 1, 2026 and First Grade Math Challenge on November 1, 2026.

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