GenomeCache vs Number Line, by MLC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GenomeCache
Explore the human genome through a virtual scavenger hunt, learning about genetic points of interest and their contribution to human traits. Test your knowledge with trivia and compete on a leaderboard.
- Virtual scavenger hunt through the human genome
- Learn about genetic points of interest
- Discover how genes contribute to human traits
- Engage with fun facts
- Test knowledge with trivia questions
- Post high scores to a leaderboard
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Genome Cache™ has been developed by the Educational Outreach Team at the HudsonAlpha Institute for Biotechnology in Huntsville, Alabama. It can be used on McMillian Park, located on the HudsonAlpha campus in Huntsville or in conjunction with the GenomeCache website (genomecache.hudsonalpha.org), anyone anywhere can create their own GenomeWalk. The app includes a total of 20 different pathways through the human genome to choose from, each highlighting 15 genetic points of interest. Explore the human genome through a virtual scavenger hunt, learn about how genes contribute to human traits, engage with fun facts, and test your knowledge with a trivia questions. Get points by finding each location and answering the trivia questions correctly and post your high score to the leader board.
Number Line, by MLC
This app allows students to visualize number sequences and demonstrate mathematical strategies. It supports various number types and offers tools for annotation, problem-solving, and sharing work. Ideal for elementary classrooms and iPad learning environments.
- Visualize number sequences
- Demonstrate counting, adding, subtracting, multiplying, dividing
- Use whole numbers, fractions, decimals, or negative numbers
- Add custom tick marks and labels
- Hide and reveal numbers and jumps
- Annotation and drawing tools
- Save and share work
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Number Line helps students visualize number sequences and demonstrate strategies for counting, comparing, adding, subtracting, multiplying, and dividing. Choose number lines labelled with whole numbers, fractions, decimals, or negative numbers. Or use a blank number line, with or without tick marks. Describe intervals between points on the line using forward or backward jumps above and below the line. Jumps can be labelled with their values or left blank. Add custom tick marks to the number line to show equivalence or compare number values. Show strategies with drawing and annotation tools. Hide elements of the sequence shown on the number line, which challenges students to use what they know about number relationships and computation to identify those missing elements. This virtual number line is an open-ended educational tool, ideal for elementary classrooms and other learning environments that use iPads. For more Number Line resources and other apps, visit: www.mathlearningcenter.org/apps FEATURES • Mark the number line with multiples of whole numbers, fractions, or decimals. In addition, set the starting value of the line, including using negative values. • Add and manipulate forward and backward jumps, above or below the line. • Label jump bars, manually or automatically, to show intervals or hide labels altogether. • Add custom tick marks and values to blank number lines. • Hide and reveal numbers on the number line. • Hide and reveal jumps, numbers, and other elements with resizable covers to create your own problems and model strategies. • Use the drawing tools to annotate work and show understanding. • Add equations, expressions, and descriptions with the math text and writing tools. • Share your work by saving an image or providing a share code to others. MORE APPS For more Number Line resources and other apps, visit: www.mathlearningcenter.org/apps LEARN MORE To learn about Bridges in Mathematics, an elementary curriculum that employs visual models like number line, visit: www.mathlearningcenter.org/bridges/overview ABOUT US This resource is brought to you by The Math Learning Center, a nonprofit organization dedicated to K-12 education since 1976. ACKNOWLEDGEMENTS This app was crafted by Clarity Innovations. We help improve teaching and learning by creating solutions that match promising technologies with the needs of education. Visit us: www.clarity-innovations.com
Screenshots
Verdict
The clearest difference is review sentiment: Number Line, by MLC at 67% against GenomeCache's 44%. Number Line, by MLC also leads on rating (4.4 vs 4.2) and ratings volume (15 vs 5). GenomeCache's advantage is update cadence (every 3 months vs every 13 months) and device support (3 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Number Line, by MLC holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 5 and 15 respectively. Written reviews point the same way: 44% of GenomeCache's written reviews are positive against 67% of Number Line, by MLC's.
GenomeCache ships an update every 3 months, Number Line, by MLC every 13 months. The most recent releases landed on November 1, 2026 and October 9, 2026 respectively.
| Parameter | GenomeCache | Number Line, by MLC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 4.4 (15 ratings) — better |
| Positive reviews | 44.4% of reviews | 66.7% of reviews — better |
| Number of ratings | 5 | 15 — better |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 11 — better | 16.1 |
| Further details — not scored | ||
| Size | 113 MB | 7 MB |
| Age rating | 12+ | 4+ |
| Developer | HudsonAlpha Institute for Biotechnology | The Math Learning Center |
Customer experience
GenomeCache
Number Line, by MLC
In-app purchases
GenomeCache
No in-app purchases
Number Line, by MLC
No in-app purchases
Questions
Is GenomeCache free?
Is Number Line, by MLC free?
Which has better reviews, GenomeCache or Number Line, by MLC?
Do GenomeCache or Number Line, by MLC have ads?
Which is updated more often, GenomeCache or Number Line, by MLC?
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