# Count Sort vs Number Rack, by MLC

The clearest difference is review sentiment: Number Rack, by MLC at 100% against Count Sort's 50%. Number Rack, by MLC also leads on rating (3.2 vs 1.0) and ratings volume (9 vs 1). Count Sort's advantage is update cadence (every 7 months vs every 25 months) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Number Rack, by MLC holds the better App Store score, 3.2 against 1.0. That said, the two scores are not equally well evidenced: Number Rack, by MLC has 9 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 100% of Number Rack, by MLC's.

Count Sort ships an update every 7 months, Number Rack, by MLC every 25 months. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Count Sort | Number Rack, by MLC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/count-sort/id426876762/reviews) | **[3.2 (9 ratings)](https://appshunter.io/ios/app/number-rack-by-mlc/id1469094747/reviews)** |
| Number of ratings | 1 | **9** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 25 months |
| Monetization | Free | Free |
| Size | 41 MB | 4 MB |
| Requires iOS | **10.0** | 14.7 |
| 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 Rack, by MLC

[App page](https://appshunter.io/ios/app/number-rack-by-mlc/id1469094747)

This virtual manipulative tool helps children develop number sense through interactive bead groupings. It supports exploration of addition and subtraction strategies with customizable rows and colors. Ideal for elementary classrooms, it includes annotation and sharing features.

**Highlights:** 1-10 rows of 10 beads, Resizable bead covers for subtraction, Color-coded bead rows, Annotation and drawing tools, Math text and writing tools, Shareable work via image or code

**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 Rack, by MLC free?

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

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

Number Rack, by MLC is rated higher. Count Sort averages 1.0 out of 5 from 1 ratings, while Number Rack, by MLC averages 3.2 from 9 ratings.

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

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

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

Count Sort ships an update every 7 months, and Number Rack, by MLC every 25 months. Most recently, Count Sort was updated on October 3, 2026 and Number Rack, by MLC on October 14, 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.*