Here is a fitness mount that lets you attach your smartphone to dumbbells, barbells, exercise bikes and other gym equipment. The Perchmount Clip has a durable grip to secure your phone. It rotates 360 degrees, so you can get the right angle.
The Perchmount Clip fits bars up to 1.5 inches in diameter. It fits iPhones and top Android phones. It lets you keep your phone off of dirty floors.