# Cortexfall vs 回线：BACKTRACE

Cortexfall and 回线：BACKTRACE are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Cortexfall | 回线：BACKTRACE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 50 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [JURAJ ACSAY](https://appshunter.io/developer/1816877989) | [云扬 智](https://appshunter.io/developer/1891216245) |

## What reviewers say

### Cortexfall

[App page](https://appshunter.io/ios/app/cortexfall/id6794726119)

**In-app purchases:** none


### 回线：BACKTRACE

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

**In-app purchases:** none


## Frequently asked questions

### Is Cortexfall free?

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

### Is 回线：BACKTRACE free?

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

### Do Cortexfall or 回线：BACKTRACE have ads?

Neither Cortexfall nor 回线：BACKTRACE 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.*