# Third vs Number Line, by MLC

The clearest difference is review sentiment: Number Line, by MLC at 67% against Third's 0%. Number Line, by MLC also leads on rating (4.4 vs 2.7) and ratings volume (15 vs 3). Third's advantage is device support (3 vs 1) and iOS requirement (8.0 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 2.7. That said, the two scores are not equally well evidenced: Number Line, by MLC has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Third's written reviews are positive against 67% of Number Line, by MLC's.

Third ships an update every 12 months, Number Line, by MLC every 13 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Third | Number Line, by MLC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/third-grade-math/id528248979/reviews) | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** |
| Number of ratings | 3 | **15** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 6 MB | 7 MB |
| Requires iOS | **8.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [rana nir](https://appshunter.io/developer/456155882) | [The Math Learning Center](https://appshunter.io/developer/1542700905) |

## What reviewers say

### Third

[App page](https://appshunter.io/ios/app/third-grade-math/id528248979)

This app covers a range of third-grade math topics, including number identification up to the millennium, identifying largest and smallest numbers, consecutive and previous numbers, and basic multiplication and division. It also includes exercises to find missing numbers.

**Highlights:** Number identification up to the millennium, Largest and smallest number identification, Consecutive and previous number concepts, Subtraction and multiplication in the millennium, Division of tens and hundreds, Missing number exercises

**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 Third free?

Third 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, Third or Number Line, by MLC?

Number Line, by MLC is rated higher. Third averages 2.7 out of 5 from 3 ratings, while Number Line, by MLC averages 4.4 from 15 ratings.

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

Neither Third nor Number Line, by MLC shows ads.

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

Third ships an update every 12 months, and Number Line, by MLC every 13 months. Most recently, Third was updated on November 1, 2026 and Number Line, by MLC on November 6, 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.*