iOS Icon Grid v 3
An updated version of Heath Gerlock’s iOS icon grid.
iOS Icon Grid v 3 is a free Template design resource made by Dribbble user Heath Gerlock. As far as I can tell, its license is Free for Commercial and Personal Purposes.
Helpful hint: Dribbble users are nice. If the license is unknown, it is usually because they forgot to mention it explicitly; not because they were being stingy. Ask nicely and they will probably allow you to use it.