Welcome to Ribblr
It is mostly crochet patterns that come up for testing, but knitting patterns are here too. The testing guidelines are a good thing to read up on if you’re interested in testing (or in designing patterns and how to conduct a pattern test)
The help center is very helpful to new members. Just search it on anything
I know it is long and very wordy but the terms and conditions are the rules all of us agree to abide by when we sign up. Terms and Conditions | Ribblr
I only use the website, I opt not to use the app