Comparison

Number Line, by MLC vs Read&Write

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Read&Write

This app offers advanced text-to-speech capabilities, allowing users to have text read aloud with synchronized highlighting. It also includes writing assistance features like word prediction and spell check, along with extensive formatting options for improved readability and document creation.

Highlights
  • Text-to-Speech with synchronized highlighting
  • Word prediction for faster writing
  • Customizable font and layout settings
  • Save text as audio files
  • Import and open various document formats
  • Read webpages via toolbar extension
  • Spellcheck and grammar check with word descriptions
Features
Read full description

Read&Write for iPad is a reading and writing app with high-quality text-to-speech, formatting controls, a wide range of fonts and styles and cloud storage integration. Read&Write provides visual highlighting in-sync with spoken words, a great range of colour and font settings to allow for optimum reading, and word prediction to help with writing. Read&Write is a quality app for proofreading text through listening, helping with reading and literacy development, and creating audio files from any text. PRODUCT FEATURES • Text-to-Speech - Type into Read&Write and have the text read back to you. You can check text and proofread it quickly and easily. - You can import documents into Read&Write from apps such as Mail, or import directly from Dropbox, Google Drive and OneDrive.. Read&Write can open a range of document formats including Word doc, PDF and epub. - Text from any app can be copied and pasted into Read&Write ready to be read back. - Apple's speech recognition can be used to dictate text directly into Read&Write, and can be listened back to ensure it is right. - The Apple spell check works in Read&Write too, further helping accuracy. - You can save the text as an audio file using the same high-quality voice. • Word Prediction Word prediction helps with writing more quickly and accurately. • Visual Highlighting Text is highlighted as the text is read back. Highlighting allows you to coordinate reading and listening. Read&Write lets you pick the colour and style of highlighting required. There are four highlighting modes to choose from: none, word by word, word trail, or sentence by sentence highlighting. • Font & Layout Change the font type, size or colour to suit your needs. Layout the text for easier reading by adjusting the character, line and paragraph spacing and adjusting the page margins. Text can be formatted bold, italic and underlined to emphasise. Images can be inserted into the text from the camera or your library. • Save to Audio Convert any text into an audio file using any of the high-quality voices. This is quick and easy, allowing text to be listened to on the move. Great for proofreading on the go. • Share your text Text created within Read&Write can be emailed, messaged, printed, opened in another app, or copied and pasted into another app, like Safari. • Read webpages You can now read webpages in Safari and other browsers, using the "Read&Write Toolbar" extension from the share menu. * Spellcheck & Grammar check Use the Read&Write spellcheck feature that can provide you with additional word descriptions and pictures to help you find the correct word. Also included in this app is the Read&Write Keyboard app, which is a powerful keyboard replacement that works in every app. Supporting reading, writing, comprehension and vocabulary development, Read&Write provides a rich set of features which extend accessibility and provide a range of tools to help with literacy including: • Text to speech • Prediction • Dictionary / Talking dictionary • Picture Dictionary • Check It • Talk&Type (available for iOS 10 and above) • Speak as I type • OpenDyslexic font support • Language translation in Safari (French or Spanish, Locale dependent) • French language localisation The Read&Write keyboard app provides help everywhere it’s needed whether it’s working on documents, presentations, being creative or just using mail. It’s great for those with individual needs such as Dyslexia and those where English is not their first language, but it’s designed for everyone.

Screenshots

Read&Write4 screens

Verdict

The call

The clearest difference is rating: Number Line, by MLC at 4.4 against Read&Write's 3.1. Number Line, by MLC also leads on review sentiment (67% vs 24%) and in-app purchases (none vs 1). Read&Write's advantage is update cadence (monthly vs every 13 months). On price, ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Read&Write sells 1 one-off in-app purchase. Number Line, by MLC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Number Line, by MLC holds the better App Store score, 4.4 against 3.1. Both are backed by a comparable volume of ratings — 15 and 29 respectively. Written reviews point the same way: 67% of Number Line, by MLC's written reviews are positive against 24% of Read&Write's.

UpkeepUpdate frequency

Number Line, by MLC ships an update every 13 months, Read&Write monthly. Both last shipped on November 1, 2026.

Scorecard5 real differences · 5 level
Number Line, by MLC versus Read&Write: the parameters behind the verdict, then further details
ParameterNumber Line, by MLCRead&Write
PriceFreeFree
Rating4.4 (15 ratings) — better3.1 (29 ratings)
Positive reviews66.7% of reviews — better24.2% of reviews
Number of ratings1529 — better
Update frequencyEvery 13 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS16.1 — better16.6
Further details — not scored
Size7 MB225 MB
Age rating4+4+
DeveloperThe Math Learning CenterEverway Opco Ltd.

Customer experience

Number Line, by MLC

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews12 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

Read&Write

All ratings29 ratings
Positive48.3%
Neutral10.3%
Negative41.4%
Written reviews33 reviews
Positive24.2%
Neutral3.0%
Negative72.7%

In-app purchases

None

Number Line, by MLC

No in-app purchases

1 purchases

Read&Write

One-time1
  • Unlock Premium Feature$19.99

Questions

Is Number Line, by MLC free?
Number Line, by MLC is free to download, with no in-app purchases.
Is Read&Write free?
Read&Write is free to download, with in-app purchases available.
Which has better reviews, Number Line, by MLC or Read&Write?
Number Line, by MLC is rated higher. Number Line, by MLC averages 4.4 out of 5 from 15 ratings, while Read&Write averages 3.1 from 29 ratings.
Do Number Line, by MLC or Read&Write have ads?
Neither Number Line, by MLC nor Read&Write shows ads.
Which is updated more often, Number Line, by MLC or Read&Write?
Number Line, by MLC ships an update every 13 months, and Read&Write monthly. Most recently, Number Line, by MLC was updated on November 1, 2026 and Read&Write on November 1, 2026.

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