Number Line, by MLC vs KidBot Start
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
KidBot Start
This app teaches children the fundamentals of programming through an engaging puzzle game. Players command a robot to collect toys using a visual, puzzle-like interface that introduces concepts like sequencing, loops, and conditions.
- Visual programming interface
- Robot command puzzles
- Instruction sequencing
- Conditional execution
- Loops and jumps
- Offline play
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Programming is the new literacy, and you better start early! Kidbot introduces kids to programming through a fun puzzle game. A room. Toys all over. A robot under your command. Few commands, endless possibilities. Move around. Gather the toys. Get to the basket. Kidbot uses a unique programming model, both powerful and intuitive. Instructions, conditions and jumps build on a familiar analogy with jigsaw puzzles, where the form of the piece indicates where it can fit. KidBot lets kids and even teenagers gain understanding of the basic concepts behind coding and robot building: INSTRUCTION SEQUENCING IDENTIFYING COMMON PATTERNS AS PROCEDURES CONDITIONAL EXECUTION LOOPS Safe for kids NO ADS NO NETWORK CONNECTION REQUIRED NO ACCOUNTS NO SOCIAL FEATURES The programming aspect (language) of the game is inspired by the fundamental ARM architecture. This means that the child learns how computers and programming work on a very low level, how basic loops and conditional execution are built by basic blocks. The game has a very smooth learning curve, guiding the child in with many tutorials and tips. While the tips are only in English, the game can be played without the child being able to read yet, because of the very interactive tutorials that show the kid what to do action by action. KidBot Start features 12 levels, which cover sequencing and subprograms. KidBot Full features 48 levels and adds condition operators as well as jumps and recursion.
Screenshots
Verdict
The clearest difference is rating: KidBot Start at 5.0 against Number Line, by MLC's 4.4. KidBot Start also leads on review sentiment (100% vs 67%) and update cadence (every 5 months vs every 13 months). Number Line, by MLC's advantage is ratings volume (15 vs 2). 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.
KidBot Start holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Number Line, by MLC has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Number Line, by MLC's written reviews are positive against 100% of KidBot Start's.
Number Line, by MLC ships an update every 13 months, KidBot Start every 5 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | Number Line, by MLC | KidBot Start |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (15 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 15 — better | 2 |
| Update frequency | Every 13 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 16.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 7 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | The Math Learning Center | KONSTANTIN ILIEV VASSILEV |
Customer experience
Number Line, by MLC
KidBot Start
In-app purchases
Number Line, by MLC
No in-app purchases
KidBot Start
No in-app purchases
Questions
Is Number Line, by MLC free?
Is KidBot Start free?
Which has better reviews, Number Line, by MLC or KidBot Start?
Do Number Line, by MLC or KidBot Start have ads?
Which is updated more often, Number Line, by MLC or KidBot Start?
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