# Behind the Wall! vs Backpack Alpaca

The clearest difference is in-app purchases: Behind the Wall! at none against Backpack Alpaca's 10. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Backpack Alpaca sells 10 one-off in-app purchases. Behind the Wall! asks for nothing beyond the download.

## The numbers

| Metric | Behind the Wall! | Backpack Alpaca |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/behind-the-wall/id6476975187/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 3 months |
| Monetization | Ad-supported | — |
| Size | 126 MB | 146 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BooBoo Games](https://appshunter.io/developer/1527042659) | [Guangzhou Duoyi Trading Co., Ltd](https://appshunter.io/developer/1620123861) |

## What reviewers say

### Behind the Wall!

[App page](https://appshunter.io/ios/app/behind-the-wall/id6476975187)

Defend your base from waves of attacking enemies by building defenses and training troops. Strengthen your base and ensure your army is always ready to overpower incoming threats before the wall is breached.

**Highlights:** Base defense, Enemy attacks, Base building, Troop training, Army management

**Features:** macOS Compatibility

**In-app purchases:** none


### Backpack Alpaca

[App page](https://appshunter.io/ios/app/backpack-alpaca/id6746483389)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Movie Tickets × 5 | $0.29 | one-time |
| Founder's Bounty | $0.99 | one-time |
| Advertising Voucher Package | $0.99 | one-time |
| Limited-Time Legendary Package | $0.99 | one-time |
| Wish Package | $0.99 | one-time |
| Movie Tickets × 10 | $0.99 | one-time |
| Movie Tickets × 25 | $1.99 | one-time |
| Skin Package | $4.79 | one-time |
| Golden Monthly Card | $4.79 | one-time |
| Premium Monthly Card | $9.79 | one-time |


## Frequently asked questions

### Is Behind the Wall! free?

Behind the Wall! is free to download, with no in-app purchases.

### Is Backpack Alpaca free?

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

### Do Behind the Wall! or Backpack Alpaca have ads?

Both Behind the Wall! and Backpack Alpaca show ads.

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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.*