# Loop Looters vs Underground

The clearest difference is in-app purchases: Loop Looters at none against Underground's 5. Loop Looters also leads on iOS requirement (15.0 vs 17.6). Underground's advantage is update cadence (every 3 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Underground sells 5 one-off in-app purchases. Loop Looters asks for nothing beyond the download.

Loop Looters ships an update fortnightly, Underground every 3 days. The most recent releases landed on October 12, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Loop Looters | Underground |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/underground-bunker-survival/id6778126949/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 72.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | — | Paid |
| Size | 27 MB | 35 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Lars Ghezzi](https://appshunter.io/developer/1878686324) | [Sunspear Software LLC](https://appshunter.io/developer/1478643604) |

## What reviewers say

### Loop Looters

[App page](https://appshunter.io/ios/app/loop-looters-echo-hunt/id6768355627)

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

**In-app purchases:** none


### Underground

[App page](https://appshunter.io/ios/app/underground-bunker-survival/id6778126949)

Manage a post-apocalyptic underground bunker, balancing resources, people's needs, and external threats. Build rooms, accept survivors, and guide your community's development through strategic decisions and mini-games.

**Highlights:** Build and manage over 40 types of rooms, Balance essential resources like food, water, and energy, Manage individual survivor skills, health, and stress, Accept or reject new survivors at your gates, Explore tunnels, gather loot, and trade with friends, Engage in mini-games for resources and event outcomes, Play offline with time pausing when the app is closed

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Parts Crate (Small) | $0.99 | one-time |
| Parts Crate (Medium) | $1.99 | one-time |
| Supply Crate (Mixed) | $1.99 | one-time |
| Support the Shelter | $2.99 | one-time |
| Parts Crate (Large) | $3.99 | one-time |


## Frequently asked questions

### Is Loop Looters free?

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

### Is Underground free?

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

### Do Loop Looters or Underground have ads?

Both Loop Looters and Underground show ads.

### Which is updated more often, Loop Looters or Underground?

Loop Looters ships an update fortnightly, and Underground every 3 days. Most recently, Loop Looters was updated on October 12, 2026 and Underground 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.*