# CASL Pro vs oLoader II

The clearest difference is update cadence: oLoader II at every 8 days against CASL Pro's every 17 months. CASL Pro's advantage is iOS requirement (12.0 vs 15.0). 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.

CASL Pro ships an update every 17 months, oLoader II every 8 days. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | CASL Pro | oLoader II |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 8 days** |
| Size | 74 MB | 177 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NAUKOVO-VPROVADZHUVALNA FIRMA VENBEST-LTD, TOV](https://appshunter.io/developer/1384401446) | [TIRAS-12, TOV](https://appshunter.io/developer/1140226201) |

## What reviewers say

### CASL Pro

[App page](https://appshunter.io/ios/app/casl-pro/id1546362082)

**Features:** macOS Compatibility

**In-app purchases:** none


### oLoader II

[App page](https://appshunter.io/ios/app/oloader-ii-for-engineers/id6477153101)

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

**In-app purchases:** none


## Frequently asked questions

### Is CASL Pro free?

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

### Is oLoader II free?

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

### Do CASL Pro or oLoader II have ads?

Neither CASL Pro nor oLoader II shows ads.

### Which is updated more often, CASL Pro or oLoader II?

CASL Pro ships an update every 17 months, and oLoader II every 8 days. Most recently, CASL Pro was updated on September 9, 2026 and oLoader II on September 22, 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.*