Here is a versatile indoor bike mount that lets you exercise with your tablet and smartphone. The IndoorVelo Screen Mount is made from carbon and aluminum and fits 99.9% of handlebars. It holds multiple devices simultaneously and lets you exercise with Zwift and your other favorite apps.
This mount supports all kinds of tablets and smartphones as well as laptops up to 370mm wide. You can find out more about this project on Kickstarter.[where to get it]