# Count Sort vs Number Line, by MLC

The clearest difference is rating: Number Line, by MLC at 4.4 against Count Sort's 1.0. Number Line, by MLC also leads on review sentiment (67% vs 50%) and ratings volume (15 vs 1). Count Sort's advantage is device support (3 vs 1) and iOS requirement (10.0 vs 16.1). On price, update cadence, ads and in-app purchases there is nothing between them.

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 1.0. That said, the two scores are not equally well evidenced: Number Line, by MLC has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Count Sort's written reviews are positive against 67% of Number Line, by MLC's.

Count Sort ships an update every 7 months, Number Line, by MLC every 13 months. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Count Sort | Number Line, by MLC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/count-sort/id426876762/reviews) | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** |
| Number of ratings | 1 | **15** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 41 MB | 7 MB |
| Requires iOS | **10.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Classroom Focused Software](https://appshunter.io/developer/406741679) | [The Math Learning Center](https://appshunter.io/developer/1542700905) |

## What reviewers say

### Count Sort

[App page](https://appshunter.io/ios/app/count-sort/id426876762)

This app introduces young children to basic number concepts and counting. It helps them understand one-to-one correspondence and early numeral recognition with adjustable counting targets. An iPad version offers 10 Frames for visual counting.

**Highlights:** One-to-one counting practice, Adjustable counting targets (up to 32), Early numeral recognition, Number family recognition, 10 Frames option (iPad)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Count Sort free?

Count Sort is free to download, with no in-app purchases.

### Is Number Line, by MLC free?

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

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

Number Line, by MLC is rated higher. Count Sort averages 1.0 out of 5 from 1 ratings, while Number Line, by MLC averages 4.4 from 15 ratings.

### Do Count Sort or Number Line, by MLC have ads?

Neither Count Sort nor Number Line, by MLC shows ads.

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

Count Sort ships an update every 7 months, and Number Line, by MLC every 13 months. Most recently, Count Sort was updated on October 3, 2026 and Number Line, by MLC on October 9, 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.*