Bought two MagSafe Wallets and two tracker cards. They work well with our iPhones that have leather covers. There has been no problem with the wallets jarring loose from the iPhones. Have not needed to use the magnetic adapter for more secure coupling. Without the cover on the iPhones the magnetic bond is rock solid. The tracker cards are working very well and many times I've found I can even pick up their signal when I can't get a signal from the other iPhone. I have not as yet used the air fresheners.