# Boulder Base vs Protocell Defender

The clearest difference is in-app purchases: Protocell Defender at none against Boulder Base's 20. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Boulder Base sells 20 one-off in-app purchases. Protocell Defender asks for nothing beyond the download.

## The numbers

| Metric | Boulder Base | Protocell Defender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 642 MB | 66 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Lukas Havel](https://appshunter.io/developer/1449361003) | [Pierre-Julien AVRIL](https://appshunter.io/developer/1877804000) |

## What reviewers say

### Boulder Base

[App page](https://appshunter.io/ios/app/boulder-base-sci-fi-story-td/id1449361004)

**Features:** macOS Compatibility

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Truck of Boulder Coins | $1.99 | one-time |
| Cup Of Hero Parts | $1.99 | one-time |
| Unlock Northfort base | $2.99 | one-time |
| Unlock Redwick base | $2.99 | one-time |
| Unlock Waypond base | $2.99 | one-time |
| Unlock Millstone base | $2.99 | one-time |
| Unlock Burned Town base | $2.99 | one-time |
| Unlock Desert Cliff base | $2.99 | one-time |
| Small Halloween pack | $2.99 | one-time |
| Small Builder pack | $2.99 | one-time |
| Small Christmas pack | $2.99 | one-time |
| Small army pack | $2.99 | one-time |
| Complex pack | $2.99 | one-time |
| Supply of Boulder Coins | $4.99 | one-time |
| Barrel Of Hero Parts | $4.99 | one-time |
| Big Christmas pack | $4.99 | one-time |
| Big Halloween pack | $4.99 | one-time |
| Big Builder pack | $4.99 | one-time |
| Big complex pack | $4.99 | one-time |
| Big army pack | $4.99 | one-time |


### Protocell Defender

[App page](https://appshunter.io/ios/app/protocell-defender/id6767057378)

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

**In-app purchases:** none


## Frequently asked questions

### Is Boulder Base free?

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

### Is Protocell Defender free?

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

### Do Boulder Base or Protocell Defender have ads?

Neither Boulder Base nor Protocell Defender shows 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.*