PHP is not a templating language. You can build a template engine with it, but then, you can build one with any other language.
If your app is in swift or objective-c, look into template libraries for those languages. Simple Google search tells me there's a couple of options including one using handlebar's format.
If your app is in swift or objective-c, look into template libraries for those languages. Simple Google search tells me there's a couple of options including one using handlebar's format.