# CASI Audit Tool vs QSF Audit

The clearest difference is update cadence: QSF Audit at every 4 days against CASI Audit Tool's every 3 months. CASI Audit Tool's advantage is iOS requirement (13.1 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

CASI Audit Tool ships an update every 3 months, QSF Audit every 4 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CASI Audit Tool | QSF Audit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 38 MB | 39 MB |
| Requires iOS | **13.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [everysite](https://appshunter.io/developer/643308653) | [Zolboo Gankhuyag](https://appshunter.io/developer/1816143086) |

## What reviewers say

### CASI Audit Tool

[App page](https://appshunter.io/ios/app/casi-audit-tool/id643308650)

**Features:** macOS Compatibility

**In-app purchases:** none


### QSF Audit

[App page](https://appshunter.io/ios/app/qsf-audit/id6752980614)

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

**In-app purchases:** none


## Frequently asked questions

### Is CASI Audit Tool free?

CASI Audit Tool is free to download, with no in-app purchases.

### Is QSF Audit free?

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

### Do CASI Audit Tool or QSF Audit have ads?

Neither CASI Audit Tool nor QSF Audit shows ads.

### Which is updated more often, CASI Audit Tool or QSF Audit?

CASI Audit Tool ships an update every 3 months, and QSF Audit every 4 days. Most recently, CASI Audit Tool was updated on November 1, 2026 and QSF Audit on October 30, 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.*