# Number Line, by MLC vs ScratchUP

The clearest difference is price: Number Line, by MLC at Free against ScratchUP's $0.99. Number Line, by MLC also leads on rating (4.4 vs 4.0) and ratings volume (15 vs 4). ScratchUP's advantage is update cadence (every 4 months vs every 13 months) and review sentiment (75% vs 67%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Number Line, by MLC is free to download; ScratchUP costs $0.99 up front. 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 4.0. Both are backed by a comparable volume of ratings — 15 and 4 respectively. Written reviews complicate that: 67% of Number Line, by MLC's written reviews are positive against 75% of ScratchUP's, so the app with the better star average is not the one people write more warmly about.

Number Line, by MLC ships an update every 13 months, ScratchUP every 4 months. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Number Line, by MLC | ScratchUP |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/scratchup/id1596380124/reviews) |
| Number of ratings | **15** | 4 |
| Positive reviews | 66.7% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 4 months** |
| Monetization | **Free** | Paid |
| Size | 7 MB | 476 MB |
| Requires iOS | 16.1 | **15.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Math Learning Center](https://appshunter.io/developer/1542700905) | [Ulrich PICAUD](https://appshunter.io/developer/1582663236) |

## 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


### ScratchUP

[App page](https://appshunter.io/ios/app/scratchup/id1596380124)

This app allows users to learn, teach, and play with code. It offers a variety of features for creating educational activities, including sensor integration, machine learning capabilities, and math tools. Compatible with Scratch files, it provides an offline coding experience for students and educators.

**Highlights:** Scratch file compatibility (.sb2, .sb3), Sensor event integration (touch, keyboard, camera, Bluetooth), Machine learning for object and sound recognition, Body detection, Handpose, and Facemesh, QRCode scanner, Math tools for learning, Offline app functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Number Line, by MLC free?

Number Line, by MLC is free to download, with no in-app purchases.

### Is ScratchUP free?

ScratchUP costs $0.99, with no in-app purchases.

### Which has better reviews, Number Line, by MLC or ScratchUP?

Number Line, by MLC is rated higher. Number Line, by MLC averages 4.4 out of 5 from 15 ratings, while ScratchUP averages 4.0 from 4 ratings.

### Do Number Line, by MLC or ScratchUP have ads?

Neither Number Line, by MLC nor ScratchUP shows ads.

### Which is updated more often, Number Line, by MLC or ScratchUP?

Number Line, by MLC ships an update every 13 months, and ScratchUP every 4 months. Most recently, Number Line, by MLC was updated on October 9, 2026 and ScratchUP on October 16, 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.*