I work on apps every day and I always recommend supporting 3.2 and higher. There are relatively few "necessity" api's in anything above that and there is anoth

I work on apps every day and I always recommend supporting 3.2 and higher. There are relatively few "necessity" api's in anything above that and there is another much simpler way of blocking out the older devices if you need to. Set the opengles flag to 2.0 and higher, this will automatically cut out all of the older devices while not punishing people who just don't upgrade. Don't kid yourself that instapapers numbers are fully correct as Josh mentions as they are Sku'd because his app is built to work best with iPad and therefore all OS's will be higher. iPad is also owned by more tech savvy people and thus they are more likely to upgrade. If you are making a simple app which has a nice interface always aim for lowest common denominator. If you are making a 3D game cut your losses and use the tech of opengles 2.0, if you are somewhere in between, always aim for LCD and you can always put your OS up if need be.