M'lady and I both are CPAP/BIPAP users with COPD issues. Has anyone found an app for trip/route planning that they use for limiting their elevation during travel. We dont know yet at what point it will be a problem for us but D's Dr said she would likely have trouble somewhere above 7000 feet,she may be ok just riding up to 9 or 10 we wont know till were out there. So I was starting to look for Apps to assist us in route planning.