How to create a light border for an app icon

Question

This is a fine piece of iPhone app icon:

I'm wondering how they created the fine texture along with the slight 'glow' on the edges:

I suppose the texture is made by a semi-transparent layer on top of the red background, but how did they do the light red glow on the border of the icon?

Answer 1

In Photoshop, this can be done by using stroke.

Left click on layers and open blending option

Blending option > Stroke 

and then select color according to need.

Answer 2

In Illustrator, two options come to mind.

• Use the inner glow effect
• Add another fill and apply a transform effect to scale it in from the edges.