Want to know what kind of redirect tool you are using

Javascript is used.

The screenshot shows instructions for users to interact with the WebView features of iOS, not the redirect tool features.

If you open a URL from a native app such as LINE or Twitter, but you cannot redirect it directly, you will be redirected to the blog site (in Javascript) by opening a browser such as Safari as instructed.

Also, this is a guess, but URLs like https://hoge.xyz/Vc are probably meant to track the link source, not the shortened URL.

When I went directly to the URL in the specified screenshot, sorry!under construction was displayed, and I could not confirm the behavior.
So when I searched the URL on Google, I found an accessible path.
(The URL itself is not included because the content is spam.)

Therefore, when I cURL and checked the contents, it included a similar image (/A_files/pic.png) to the screen shot and a Javascript that rewrites window.location.href depending on the terminal accessed.