Hi John,
You are correct. I also use Foreflight on my phone as a back up, and when you pull up airport info, it does list the pattern altitude. Not that adding 1000' to the airport elevation is that difficult, it does eliminate any potential for mathematical errors by former knuckle dragging ex Army paratroopers like myself. Planning is still the key prior to any flight to a unfamiliar area. Personally, I don't like using the iphone for anything but playing music when it comes to flying.
Respectfully
FS