Third vs Number Line, by MLC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Third
This app covers a range of third-grade math topics, including number identification up to the millennium, identifying largest and smallest numbers, consecutive and previous numbers, and basic multiplication and division. It also includes exercises to find missing numbers.
- Number identification up to the millennium
- Largest and smallest number identification
- Consecutive and previous number concepts
- Subtraction and multiplication in the millennium
- Division of tens and hundreds
- Missing number exercises
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Topics covered: Identification numbers in the Millennium What is the largest number What is the smallest number Consecutive numbers Previous numbers Connection in the Millennium Subtraction in the Millennium Hundreds multiplication Divide tens and hundreds What is missing in the exercise
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 Third's 0%. Number Line, by MLC also leads on rating (4.4 vs 2.7) and ratings volume (15 vs 3). Third's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 16.1). On price, update cadence, ads and in-app purchases 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 2.7. That said, the two scores are not equally well evidenced: Number Line, by MLC has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Third's written reviews are positive against 67% of Number Line, by MLC's.
Third ships an update every 12 months, Number Line, by MLC every 13 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | Third | Number Line, by MLC |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (3 ratings) | 4.4 (15 ratings) — better |
| Positive reviews | 0.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 3 | 15 — better |
| Update frequency | Every 12 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 8.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 6 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | rana nir | The Math Learning Center |
Customer experience
Third
Number Line, by MLC
In-app purchases
Third
No in-app purchases
Number Line, by MLC
No in-app purchases
Questions
Is Third free?
Is Number Line, by MLC free?
Which has better reviews, Third or Number Line, by MLC?
Do Third or Number Line, by MLC have ads?
Which is updated more often, Third or Number Line, by MLC?
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