# Number Sum vs Scavengo

The clearest difference is in-app purchases: Scavengo at none against Number Sum's 5. Scavengo also leads on update cadence (every 4 days vs fortnightly). Number Sum's advantage is iOS requirement (12.5 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Number Sum sells 5 one-off in-app purchases. Scavengo asks for nothing beyond the download.

Number Sum ships an update fortnightly, Scavengo every 4 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Number Sum | Scavengo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (2.3K ratings)](https://appshunter.io/ios/app/number-sum-math-puzzle-game/id6465898279/reviews)** | — |
| Number of ratings | **2.3K** | — |
| Positive reviews | 21.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 270 MB | 27 MB |
| Requires iOS | **12.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 12+ |
| Developer | [Microjoy Games Limited](https://appshunter.io/developer/1563212132) | [John Mikhail](https://appshunter.io/developer/606019176) |

## What reviewers say

### Number Sum

[App page](https://appshunter.io/ios/app/number-sum-math-puzzle-game/id6465898279)

This logic puzzle game challenges your arithmetic and problem-solving skills. It features a simple interface where you adjust numbers to make rows and columns sum correctly. With adjustable difficulty and no time limits, it offers hours of engaging brain training.

**Highlights:** Logic and math skill challenge, Adjustable number grids (3x3 to 8x8), Toggle between correct/delete modes, Hints available for assistance, No time limits for gameplay, Minimalistic and simple design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Beginner Pack | $0.99 | one-time |
| Big Pack | $4.99 | one-time |
| Remove Ads | $5.99 | one-time |
| Super Pack | $6.99 | one-time |
| Mega Pack | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast and responsive
- ⭐ Fun and engaging gameplay
- 💡 Helps improve math skills

**What reviewers complain about**

- 🔍 Inconsistent difficulty levels
- 🔋 High battery consumption
- 🔍 Lack of challenge in later levels
- 🔍 Repetitive ads even after paid removal

**Reported bugs**

- Game crashes or freezes
- Ads not removed after purchase

**Requested features**

- Ability to choose difficulty level
- More advanced gameplay modes
- Improved ad-free experience


### Scavengo

[App page](https://appshunter.io/ios/app/scavengo/id6752425494)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Number Sum free?

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

### Is Scavengo free?

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

### Do Number Sum or Scavengo have ads?

Both Number Sum and Scavengo show ads.

### Which is updated more often, Number Sum or Scavengo?

Number Sum ships an update fortnightly, and Scavengo every 4 days. Most recently, Number Sum was updated on October 22, 2026 and Scavengo 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.*