This app was mentioned in 5 comments, with an average of 1.80 upvotes
The zknives website and their mobile app are an excellent reference. They mostly focus on the properties relevant to knife making, but they have a comparator chart and most available steels' compositions there.
Obviously, it covers tool steel, HSS, and spring steel properties more due to their inherent suitability for knives, but is an excellent app all around.
Nutnfancy talks mostly from a user perspective. I would recommend knife steel composition app it talks about the chemical make up of steel and how it compares to others performance.
https://play.google.com/store/apps/details?id=zvisoft.stlchmob&hl=en_US&gl=US
There is a great app too. Knife steel comparison in the app store. knife steel comparison
If you're using android this app is a huge database of steel types with explanations/reviews. I think it exists for iphones too.
I've got your new favorite app if you have an android too.
Knife Steel Composition https://play.google.com/store/apps/details?id=zvisoft.stlchmob