Pearl Diver vs Missing Numbers Minds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pearl Diver
Dive into the ocean to master the number line, including fractions and decimals, by collecting pearls. This educational game is designed by experts to align with Common Core standards for grades 3-8.
- Number line mastery
- Fractions and decimals
- Common Core alignment
- Progress tracking
- Educational game design
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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. Read about research documenting learning effectiveness of Math Snacks: http://mathsnacks.com/research.html Pearl Diver was 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 & 1503507). 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).
Missing Numbers Minds
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Improve your mind skill finding out the missing number. Choose the up to 10 levels: Easy, Medium, Hard , ( linear, recurrence or both ) or Random. Push START- Time Up or Time Down Guess the missing numbers to get points. Higher Level , more points. Ideal for kinds and people who need to exercise their brain. Very easy to use. Donations for App maintenance welcome. Thanks.
Screenshots
Verdict
The clearest difference is in-app purchases: Pearl Diver at none against Missing Numbers Minds's 2. Pearl Diver also leads on iOS requirement (17.6 vs 26.1). Missing Numbers Minds's advantage is update cadence (every 5 months vs every 20 months). 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
Both are free to download. Missing Numbers Minds sells 2 one-off in-app purchases. Pearl Diver asks for nothing beyond the download.
Pearl Diver ships an update every 20 months, Missing Numbers Minds every 5 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.
| Parameter | Pearl Diver | Missing Numbers Minds |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 76.2% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 20 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 26.1 |
| Further details — not scored | ||
| Size | 28 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | New Mexico State University Board of Regents | Juan Fullana |
In-app purchases
Pearl Diver
No in-app purchases
Missing Numbers Minds
- Donation for maintenance.$0.99
- Extra for develop and maintenance$0.99
Questions
Is Pearl Diver free?
Is Missing Numbers Minds free?
Do Pearl Diver or Missing Numbers Minds have ads?
Which is updated more often, Pearl Diver or Missing Numbers Minds?
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