# Number Line, by MLC vs Bookopolis

The clearest difference is rating: Number Line, by MLC at 4.4 against Bookopolis's 2.5. Number Line, by MLC also leads on review sentiment (67% vs 33%). Bookopolis's advantage is device support (3 vs 1) and iOS requirement (7.0 vs 16.1). On price, ratings volume, update cadence and ads 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 2.5. Both are backed by a comparable volume of ratings — 15 and 12 respectively. Written reviews point the same way: 67% of Number Line, by MLC's written reviews are positive against 33% of Bookopolis's.

Number Line, by MLC ships an update every 13 months, Bookopolis every 7 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Number Line, by MLC | Bookopolis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** | [2.5 (12 ratings)](https://appshunter.io/ios/app/bookopolis/id1068101005/reviews) |
| Number of ratings | **15** | 12 |
| Positive reviews | **66.7% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 7 MB | 102 MB |
| Requires iOS | 16.1 | **7.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Math Learning Center](https://appshunter.io/developer/1542700905) | [Bookopolis Inc](https://appshunter.io/developer/1068101004) |

## 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


### Bookopolis

[App page](https://appshunter.io/ios/app/bookopolis/id1068101005)

This app helps children under 13 discover books they'll love. Users can build virtual bookshelves, share reviews, find new titles, log reading, and earn rewards for their literary achievements.

**Highlights:** Virtual bookshelves, Book reviews and recommendations, Book discovery tool, Digital reading log, Reading achievement points and badges

**Features:** macOS Compatibility

**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 Bookopolis free?

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

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

Number Line, by MLC is rated higher. Number Line, by MLC averages 4.4 out of 5 from 15 ratings, while Bookopolis averages 2.5 from 12 ratings.

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

Neither Number Line, by MLC nor Bookopolis shows ads.

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

Number Line, by MLC ships an update every 13 months, and Bookopolis every 7 months. Most recently, Number Line, by MLC was updated on October 9, 2026 and Bookopolis on October 10, 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.*