Comparison

MathTappers vs Pearl Diver HD

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

Head to head
About

MathTappers

This app helps learners develop an intuitive understanding of fractions by relating them to halves and using estimation in addition and subtraction problems. It emphasizes sense-making through visual models before procedural mastery, and is best used alongside classroom activities.

Highlights
  • Intuitive fraction understanding
  • Estimation for addition/subtraction
  • Visual models for fractions
  • Sense-making before procedures
  • Supports classroom learning
Features
Read full description

MathTappers: Fraction Estimation is designed to help learners to build their intuitive understanding of fractions by helping them to relate fractions (both symbols and pictures) to the nearest half (e.g., 0, 1/2 1, 1 1/2, 2, etc.) and then to extend their understanding by challenging them to use fraction estimates in addition and subtraction problems. Learners should be able to master the challenges in this app before moving on to formal operations with fractions. We recommend that this app be used in conjunction with classroom or tutoring activities to support consolidation, mastery and fluency through a series of manageable challenges. The purpose of this app is to support learners as they are developing their understanding of fractions, fraction symbols and fraction operations by emphasizing sense-making through estimation and the use of visual models. Evidence suggests that if learners are taught formulas and procedures before they develop understanding, then they may not be motivated to spend the effort needed to make sense of what they are doing. We want to support sense-making before procedural mastery. This app is not intended to be mastered in one shot – rather levels should be assigned judiciously to support classroom learning activities. After introducing each fraction idea (fraction estimation, and estimation of sums and differences) in a classroom presentation, explanation or discussion this app may be used in small group and individual activities to support exploration, sense-making, consolidation and remediation. Design: Tim Pelton & Leslee Francis Pelton Programming: Mike Anderson, Joshua E. Smith & Garrett Reimer The designers of the MathTappers apps are math educators and researchers seeking to create simple games that will help learners to make sense of mathematics one concept at a time. We have designed MathTappers apps to support students in learning mathematics by providing relevant visual models, focused content linked games and helpful suggestions for parents and educators. Please check out all of our MathTappers apps (links found at MathTappers.com): MathTappers: MultiMatch--a matching app that challenges learners to match sets of cards placed on the table. This is our newest MathTappers app. Although it comes with a deck and you can download others from our website, it was really designed to encourage teachers and students make and share their own matching game decks to capture their understanding and challenge others. Please go to mathtappers.com and check out our instructions on the right to find out how to make your own decks MathTappers: Clock Master--learn to tell time MathTappers: Estimate Fractions--make sense of fraction sums and differences MathTappers: Find Sums--learn basic facts for addition and subtraction MathTappers: Multiples--learn basic facts for multiplication and division MathTappers: Equivalents--equivalent fractions, decimals and percents MathTappers: Numberline--find relative positions of numbers on a numberline, MathTappers: Carbon Choices--help students explore their carbon footprint.

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).

Screenshots

MathTappers4 screens
Pearl Diver HD4 screens

Verdict

The call

The clearest difference is rating: MathTappers at 3.1 against Pearl Diver HD's 1.5. MathTappers also leads on ratings volume (80 vs 2) and iOS requirement (13.0 vs 17.6). Pearl Diver HD's advantage is in-app purchases (none vs 1). On price, review sentiment, update cadence and ads 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. MathTappers sells 1 one-off in-app purchase. Pearl Diver HD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MathTappers holds the better App Store score, 3.1 against 1.5. That said, the two scores are not equally well evidenced: MathTappers has 80 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 67% of MathTappers's written reviews are positive against 71% of Pearl Diver HD's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

MathTappers ships an update every 33 months, Pearl Diver HD every 20 months. Both last shipped on November 1, 2026.

Scorecard4 real differences · 6 level
MathTappers versus Pearl Diver HD: the parameters behind the verdict, then further details
ParameterMathTappersPearl Diver HD
PriceFreeFree
Rating3.1 (80 ratings) — better1.5 (2 ratings)
Positive reviews66.7% of reviews71.4% of reviews — better
Number of ratings80 — better2
Update frequencyEvery 33 monthsEvery 20 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size10 MB28 MB
Age rating4+4+
DeveloperJoshua SmithNew Mexico State University Board of Regents

Customer experience

MathTappers

All ratings80 ratings
Positive46.3%
Neutral11.3%
Negative42.5%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

Pearl Diver HD

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

In-app purchases

1 purchases

MathTappers

One-time1
  • Expanded Version$0.99
None

Pearl Diver HD

No in-app purchases

Questions

Is MathTappers free?
MathTappers is free to download, with in-app purchases available.
Is Pearl Diver HD free?
Pearl Diver HD is free to download, with no in-app purchases.
Which has better reviews, MathTappers or Pearl Diver HD?
MathTappers is rated higher. MathTappers averages 3.1 out of 5 from 80 ratings, while Pearl Diver HD averages 1.5 from 2 ratings.
Do MathTappers or Pearl Diver HD have ads?
Neither MathTappers nor Pearl Diver HD shows ads.
Which is updated more often, MathTappers or Pearl Diver HD?
MathTappers ships an update every 33 months, and Pearl Diver HD every 20 months. Most recently, MathTappers was updated on November 1, 2026 and Pearl Diver HD on November 1, 2026.

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