Itsy Bitsy Spider vs Number Line, by MLC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Itsy Bitsy Spider
An interactive and educational retelling of a classic nursery rhyme for young children. Features include hidden surprises, sing-along recording, and mini-games that teach counting and nature.
- Interactive illustrations with hidden surprises
- Record your own voice singing
- Learn about nature with Cloe the fly
- Counting activities with a squirrel
- Play peek-a-boo with a frog
- Watch a caterpillar transform
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An award-winning original tribute to a childhood classic, Itsy Bitsy Spider offers children a fun, interactive and educational experience. AGES: 2-5. OVERVIEW - 100% interactive illustrations with hidden surprises on every page - Easy navigation – just poke the spider to move to the next scene - Use the record feature to sing along CATEGORY: Nursery Rhyme ACTIVITIES - FOLLOW the spider on an adventure – up, down and all around - LEARN about the environment and nature from Cloe the fly - COUNT with a squirrel as he builds his house - PLAY peek-a-boo with a frog - SING along and record your own voice - LISTEN to classical music performed on a violin and cello - WATCH a caterpillar become a beautiful butterfly - COLLECT colorful eggs on the spider web AWARDS - Parents’ Choice Gold Award - Parents’ Choice Foundation - Children’s Technology Review Editor’s Choice Award for Excellence in Design ABOUT DUCK DUCK MOOSE (A subsidiary of Khan Academy) Duck Duck Moose, an award-winning creator of educational mobile apps for families, is a passionate team of engineers, artists, designers, and educators. Founded in 2008, the company has created 21 top-selling titles and has received 21 Parents’ Choice Awards, 18 Children’s Technology Review Awards, 12 Tech with Kids’ Best Pick App Awards, and a KAPi award for “Best Children’s App” at the International Consumer Electronics Show. Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. Duck Duck Moose is now part of the Khan Academy family. Like all Khan Academy offerings, all Duck Duck Moose apps are now 100% free, without ads or subscriptions. For kids ages 2-7, don't miss Khan Academy Kids, our new early learning app to help young children with reading, writing, math and social-emotional development! We’d love to hear from you! Visit us at www.duckduckmoose.com or drop us a line at support@duckduckmoose.com.
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
Verdict
The clearest difference is rating: Number Line, by MLC at 4.4 against Itsy Bitsy Spider's 4.2. Itsy Bitsy Spider's advantage is ratings volume (45 vs 15) and iOS requirement (9.0 vs 16.1). 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
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 — 45 and 15 respectively. Written reviews complicate that: 70% of Itsy Bitsy Spider's written reviews are positive against 67% of Number Line, by MLC's, so the app with the better star average is not the one people write more warmly about.
Itsy Bitsy Spider ships an update every 7 months, Number Line, by MLC every 13 months. Both last shipped on November 1, 2026.
| Parameter | Itsy Bitsy Spider | Number Line, by MLC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (45 ratings) | 4.4 (15 ratings) — better |
| Positive reviews | 70.5% of reviews — better | 66.7% of reviews |
| Number of ratings | 45 — better | 15 |
| Update frequency | Every 7 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPad |
| Requires iOS | 9.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 26 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Duck Duck Moose LLC | The Math Learning Center |
Customer experience
Itsy Bitsy Spider
Number Line, by MLC
Bugs and requests
Itsy Bitsy Spider
Reported bugs
7 issues- App won't progress past opening screen after iOS 13 update
- App won't open at all after recent update
- Stuck on first page with no way to turn pages
- Sound not working despite troubleshooting
- Program crashes and requires restart to change pages
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- App incompatible with iPad HD version
- Freezes and performance issues
Requested features
8 requests- More nursery rhymes in similar format
- Additional screens and content
- Female or child voice option for singing
- More verses of Itsy Bitsy Spider incorporated
- Automatic music playback option
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- Multi-touch support for simultaneous screen touches
- Ability to switch singer voice
- More interactive activities and projects
Number Line, by MLC
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Itsy Bitsy Spider
No in-app purchases
Number Line, by MLC
No in-app purchases
Questions
Is Itsy Bitsy Spider free?
Is Number Line, by MLC free?
Which has better reviews, Itsy Bitsy Spider or Number Line, by MLC?
Do Itsy Bitsy Spider or Number Line, by MLC have ads?
Which is updated more often, Itsy Bitsy Spider or Number Line, by MLC?
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