# Shelter Fall vs 回线：BACKTRACE

The clearest difference is in-app purchases: 回线：BACKTRACE at none against Shelter Fall's 3. 回线：BACKTRACE also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Shelter Fall sells 3 one-off in-app purchases. 回线：BACKTRACE asks for nothing beyond the download.

## The numbers

| Metric | Shelter Fall | 回线：BACKTRACE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | — |
| Size | 44 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Michel Nguyen](https://appshunter.io/developer/1870282588) | [云扬 智](https://appshunter.io/developer/1891216245) |

## What reviewers say

### Shelter Fall

[App page](https://appshunter.io/ios/app/shelter-fall-strategy-rpg/id6759238842)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 150 Stars | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 500 Stars | $4.99 | one-time |


### 回线：BACKTRACE

[App page](https://appshunter.io/ios/app/backtrace/id6797782656)

**In-app purchases:** none


## Frequently asked questions

### Is Shelter Fall free?

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

### Is 回线：BACKTRACE free?

回线：BACKTRACE is free to download, with no in-app purchases.

### Do Shelter Fall or 回线：BACKTRACE have ads?

Shelter Fall shows ads; 回线：BACKTRACE does not.

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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.*