You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
So what you should do is create a new trip meter and name it "5-3 rotated" and reset the mileage. Check the box to show in trip cards. You can swipe left on the cards to view the mileage since last rotated. Don't forget to reset the tires under the service menu as it will display the approximate mileage since the tire type was reset. I rotate my tires myself as I have the garage space and tools/equipment. Took me 50 mins this morning doing a cross pattern this time since the tires are at 5/32 on the left and 6/32 on the right. ContiExtreme DWS06's have 55k miles on them and I think I can get another 5k out of them before I need to replace them.