No, per app TouchID or PIN locking is not supported in iOS9/10. Hopefully it will be system wide for every individual app in 10.1 or 11.x because I don't trust anybody, barely trust myself.. I really want it. It's silly that if you let someone browse some pictures that they get to change my settings, read my email, browse my hidden photos, etc. Let me set a lock, and not like notes, per note, but simply per app.