# Number Line, by MLC vs Read&Write

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.

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

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.

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

## The numbers

| Metric | Number Line, by MLC | Read&Write |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** | [3.1 (29 ratings)](https://appshunter.io/ios/app/read-and-write/id934749270/reviews) |
| Number of ratings | 15 | **29** |
| Positive reviews | **66.7% of reviews** | 24.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 225 MB |
| Requires iOS | **16.1** | 16.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [The Math Learning Center](https://appshunter.io/developer/1542700905) | [Everway Opco Ltd.](https://appshunter.io/developer/600829241) |

## What reviewers say

### Number Line, by MLC

[App page](https://appshunter.io/ios/app/number-line-by-mlc/id751816884)

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:** macOS Compatibility

**In-app purchases:** none


### Read&Write

[App page](https://appshunter.io/ios/app/read-and-write/id934749270)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium Feature | $19.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*