Can multiple accounts log onto the app at the same time? January 27, 2022 22:38 Updated No, you can only have one sign in at a time on the app. Related articles PRECISION 3: Is the old PRECISION Powermeter still available? 4iiii iOS App User Guide I am connected to a 4iiii Powermeter but can’t seem to connect to any others in the “Add a Device” screen.