# Number Sum Up vs Numbers Up Skill Challenge

The clearest difference is in-app purchases: Numbers Up Skill Challenge at none against Number Sum Up's 1. Numbers Up Skill Challenge also leads on rating (5.0 vs 4.5). Number Sum Up's advantage is ads (none vs shown) and ratings volume (40 vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Number Sum Up sells 1 one-off in-app purchase. Numbers Up Skill Challenge asks for nothing beyond the download.

Numbers Up Skill Challenge holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Number Sum Up has 40 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Number Sum Up | Numbers Up Skill Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (40 ratings)](https://appshunter.io/ios/app/number-sum-up-quick-math/id6502631525/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/numbers-up-skill-challenge/id6759439482/reviews)** |
| Number of ratings | **40** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Free with in-app purchases | — |
| Size | 197 MB | 26 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ALICE GAMES](https://appshunter.io/developer/1726187276) | [WAYNE BRIAN CORRICK](https://appshunter.io/developer/1878595782) |

## What reviewers say

### Number Sum Up

[App page](https://appshunter.io/ios/app/number-sum-up-quick-math/id6502631525)

Solve number puzzles by circling and erasing digits to make rows and columns add up to target sums. This game offers a clean design and varying difficulty levels to sharpen your mental math skills.

**Highlights:** Circle and erase numbers, Solve row and column sum puzzles, Multiple difficulty levels, Varying board sizes, Hint system, Clean and simple design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### Numbers Up Skill Challenge

[App page](https://appshunter.io/ios/app/numbers-up-skill-challenge/id6759439482)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Number Sum Up free?

Number Sum Up is free to download, with in-app purchases available.

### Is Numbers Up Skill Challenge free?

Numbers Up Skill Challenge is free to download, with no in-app purchases.

### Which has better reviews, Number Sum Up or Numbers Up Skill Challenge?

Numbers Up Skill Challenge is rated higher. Number Sum Up averages 4.5 out of 5 from 40 ratings, while Numbers Up Skill Challenge averages 5.0 from 1 ratings.

### Do Number Sum Up or Numbers Up Skill Challenge have ads?

Numbers Up Skill Challenge shows ads; Number Sum Up does not.

### Which is updated more often, Number Sum Up or Numbers Up Skill Challenge?

Number Sum Up ships an update every 3 days, and Numbers Up Skill Challenge every 3 days. Most recently, Number Sum Up was updated on October 24, 2026 and Numbers Up Skill Challenge on October 24, 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.*