You can uninstall the Mobile App the same way you uninstall any other app on your phone. Your KS account will not be deleted. Please keep in mind that if you are replacing your phone and you are using the remote opening feature, you first enable the app on your new phone before you remove it from your old phone. If you fail to do so, a Site Admin needs to reset your PIN Codes before you can activate IQs on your new phone. If you are the Site Owner, you even have to reset every IQ, causing all other users to have to re-activate their IQs as well.