I'm designing on Illustrator icons for a new app, when I use 1px stroke and preview on mobile they look very thin and when I use 2px stroke they look a bit bold while Instagram icons look and feel perfect. I tried to reproduce the same but I think they use something around 1.3px stroke which is not pixel perfect for me. Could you explain me if my understanding is wrong and how I can get same result as Instagram icons?
here is an example, hope it helps to understand my point:
Image 1 is 1px stroke:
Image 2 is Instagram example:
Image 3 is 2px stroke: