# Alien Swarm 3 vs Sum Loop

The clearest difference is in-app purchases: Alien Swarm 3 at none against Sum Loop's 1. Sum Loop's advantage is update cadence (every 4 months vs every 23 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sum Loop sells 1 one-off in-app purchase. Alien Swarm 3 asks for nothing beyond the download.

Alien Swarm 3 ships an update every 23 months, Sum Loop every 4 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | Alien Swarm 3 | Sum Loop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sum-loop/id6447087917/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 23 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 67 MB | 9 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Galatic Droids](https://appshunter.io/developer/806182439) | [Goro Sato](https://appshunter.io/developer/412448991) |

## What reviewers say

### Alien Swarm 3

[App page](https://appshunter.io/ios/app/alien-swarm-3/id1002907288)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sum Loop

[App page](https://appshunter.io/ios/app/sum-loop/id6447087917)

A challenging puzzle game where players place blocks into overlapping loops to match displayed sums. Offers multiple solutions for each puzzle, providing replayability. Designed for quick, engaging gameplay.

**Highlights:** Match sums in overlapping loops, Place blocks to solve puzzles, Multiple solutions per puzzle, Challenging gameplay, Intuitive block placement

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Alien Swarm 3 free?

Alien Swarm 3 is free to download, with no in-app purchases.

### Is Sum Loop free?

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

### Do Alien Swarm 3 or Sum Loop have ads?

Both Alien Swarm 3 and Sum Loop show ads.

### Which is updated more often, Alien Swarm 3 or Sum Loop?

Alien Swarm 3 ships an update every 23 months, and Sum Loop every 4 months. Most recently, Alien Swarm 3 was updated on October 2, 2026 and Sum Loop on October 2, 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.*