# Number Line vs Colorblocks World

The clearest difference is review sentiment: Number Line at 100% against Colorblocks World's 43%. Number Line also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 11). Colorblocks World's advantage is update cadence (every 3 weeks vs every 15 months) and ratings volume (159 vs 5). On price, ads and device support there is nothing between them.

Both are free to download. Colorblocks World sells 5 in-app purchases, starting at $3.99 per month. Number Line asks for nothing beyond the download.

Number Line holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Colorblocks World has 159 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Number Line's written reviews are positive against 43% of Colorblocks World's.

Number Line ships an update every 15 months, Colorblocks World every 3 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Number Line | Colorblocks World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/number-line/id1531893217/reviews)** | [4.2 (159 ratings)](https://appshunter.io/ios/app/colorblocks-world/id1665913232/reviews) |
| Number of ratings | 5 | **159** |
| Positive reviews | **100.0% of reviews** | 42.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 16 MB | 711 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blastoff Design](https://appshunter.io/developer/1455360972) | [Blue-Zoo](https://appshunter.io/developer/938119031) |

## What reviewers say

### Number Line

[App page](https://appshunter.io/ios/app/number-line/id1531893217)

This app provides an interactive number line for educational purposes, enabling users to visualize numbers, perform various math games, and practice rounding. Its simple interface supports zooming, swiping, and marking numbers with pins or freehand drawing.

**Highlights:** Infinite number line visualization, Rounding practice (nearest 10, 100, 10,000), Number comparison, Pinch-to-zoom functionality, Swipe navigation, Search for specific numbers, Pin marking, Freehand drawing tool

**In-app purchases:** none


### Colorblocks World

[App page](https://appshunter.io/ios/app/colorblocks-world/id1665913232)

Embark on a vibrant adventure with beloved characters from a popular children's show. Engage in creative painting, explore the color wheel, and unlock rewards while learning about colors in a fun, interactive way. This app fosters early color recognition and self-expression.

**Highlights:** Creative Painting Game, Explore the Colour Wheel, Dress up characters, Unlock rewards, Learn color recognition, Watch show clips and songs

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Monthly Subscription | $3.99 | per month |
| Yearly Subscription | $39.99 | per year |
| Yearly Subscription | $39.99 | per year |
| Unlock All | $39.99 | per year |

**What reviewers like**

- 👍 Child enjoys the app
- 👍 Clever app design
- 👍 Amazing for learning
- 👍 Fun activities
- 👍 App is super awesome

**What reviewers complain about**

- 🐛 Glitchy and doesn't work well
- 🐛 Subscription issues
- 🐛 Cannot access membership
- 🐛 Charged before trial ends
- 🐛 App crashes

**Reported bugs**

- Cannot access membership after paying
- Mixing factory won't allow mixing white, black, or gray
- Charged on day one before trial ends
- Cannot access premium features
- Restore purchases pop-up is broken

**Requested features**

- Add season 3 characters
- Make creative coloring have light, dark, dull, and in-between colors
- Add color mixing to creative coloring
- Create a game to make your own Numberblock, Alphablock, or Colorblock
- Add red to the sorting express game


## Frequently asked questions

### Is Number Line free?

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

### Is Colorblocks World free?

Colorblocks World is free to download, with in-app purchases available.

### Which has better reviews, Number Line or Colorblocks World?

Number Line is rated higher. Number Line averages 5.0 out of 5 from 5 ratings, while Colorblocks World averages 4.2 from 159 ratings.

### Do Number Line or Colorblocks World have ads?

Neither Number Line nor Colorblocks World shows ads.

### Which is updated more often, Number Line or Colorblocks World?

Number Line ships an update every 15 months, and Colorblocks World every 3 weeks. Most recently, Number Line was updated on October 24, 2026 and Colorblocks World on October 21, 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.*