# Number Line vs UptoSix Phonics PLUS

The clearest difference is in-app purchases: Number Line at none against UptoSix Phonics PLUS's 5. Number Line also leads on iOS requirement (13.0 vs 15.0). UptoSix Phonics PLUS's advantage is update cadence (every 3 months vs every 15 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. UptoSix Phonics PLUS sells 5 one-off in-app purchases. Number Line asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Number Line against 5.0 for UptoSix Phonics PLUS. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Number Line ships an update every 15 months, UptoSix Phonics PLUS every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Number Line | UptoSix Phonics PLUS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/number-line/id1531893217/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/uptosix-phonics-plus/id1668819538/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 186 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) | [UPTOSIX KIDS PRIVATE LIMITED](https://appshunter.io/developer/1612241977) |

## 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


### UptoSix Phonics PLUS

[App page](https://appshunter.io/ios/app/uptosix-phonics-plus/id1668819538)

This app helps young children develop essential phonics and reading skills through interactive lessons and games. It covers a comprehensive curriculum aligned with educational standards, making learning fun and engaging for kindergarten and primary school students.

**Highlights:** Interactive phonics lessons, Covers single sounds, digraphs, blends, Includes tricky words and magic 'e', Age-appropriate content, Engaging visuals and games, Aligned with English National Curriculum

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Days Non-renewable Credit | $6.99 | one-time |
| 60 Days Non-renewable Credit | $7.99 | one-time |
| 90 Days Non-renewable Credit | $9.99 | one-time |
| 180 Days Non-renewable Credit | $12.99 | one-time |
| One-time purchase | $28.90 | one-time |


## Frequently asked questions

### Is Number Line free?

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

### Is UptoSix Phonics PLUS free?

UptoSix Phonics PLUS is free to download, with in-app purchases available.

### Which has better reviews, Number Line or UptoSix Phonics PLUS?

Number Line and UptoSix Phonics PLUS are both rated 5.0 out of 5 on the App Store, from 5 and 2 ratings respectively.

### Do Number Line or UptoSix Phonics PLUS have ads?

Neither Number Line nor UptoSix Phonics PLUS shows ads.

### Which is updated more often, Number Line or UptoSix Phonics PLUS?

Number Line ships an update every 15 months, and UptoSix Phonics PLUS every 3 months. Most recently, Number Line was updated on November 3, 2026 and UptoSix Phonics PLUS on November 3, 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.*