The Best Treadmill Apps for Running and Walking Indoors in 2024Our picks can help with your training whether your goal is to run a marathon, keep an easy-to-access log for your miles or work toward beating your PR. Amber Sayer, NSCA-certified personal trainer | Jan 9, 2023The Best Treadmill Apps for Running and Walking Indoors in 2024 / Published Jan 9, 2023AMBER SAYER, NSCA-CERTIFIED PERSONAL TRAINER