Great for mittens!
I used this with a pattern that had lots of small repeating steps (evenly increasing for mittens) and it worked great! Very basic, but easier than using paper and tally marks.
Not enough ratings yet to assess Knitwise.
Knitwise appears legitimate, with a few gaps. AppsHunter Legitimacy Score for Knitwise is 68/100.
Based on 68 of 100 points across 7 verification signals from App Store and developer data.