You have to support thousands of different devices, most of which are significantly lower spec than iOS devices. Also, the OS is usually running more concurrent

You have to support thousands of different devices, most of which are significantly lower spec than iOS devices. Also, the OS is usually running more concurrent processes than iOS, reducing the resources available to your app even more. If you’re doing something resource intensive like a continuously running camera preview with AR effects, these things are likely to cause you some headaches!