I had a trial version which cannot be removed anymore, so I left behind because it was not possible to redeem the code without making new account.
Besides, I agree with most of reviewers here, the UI is great and there is no need to learn anything. It's straight forward. It gives so many information in one place.
I put clients websites and mine too and it picked up very easy.
For those who ask about different languages and characters. I added website in Japanese and it was no problem at all. I even inserted keywords in Japanese language. It was interesting to see one of the competitor for those keywords that I know is always around.
I also added one of competitor's website and it showed me their data.
Before I would jump to a few places to check data. I have SEMrush free account which gives me some idea but not so deep as Screpy because is free account after all.

I like to have links to more info about issues that have been found and what can be done.
However, as a none coder, one must continue to search other websites for specific information such as "how to remove unused CSS or JS".

A few observation I would like to add

Relies too much (100%) on Google (maybe because I'm not fan of G Corp.)
DuckDuckGo, Startpages would be good. These are only 2 I use
GTmetrix is missing. I wish it was there too.

As for Japanese. Majority of Japanese people use Yahoo Japan (Bing) for searches. Yes, Yahoo is still there big. It would be good to see it in Screpy.
Also, to be able to choose search engine (here we go Google again) from different countries in one go after input keywords. Maybe tick boxes? (just an idea)
At the end I wish Screpy website itself worked faster. My speed internet is 300Mbps but sometimes it takes quite long to open the website or it freezes everything while being logged in. As a result the browser must be restarted. At least this is what I observed.