Yes there is – you can download Capture One from the App Store. The app will work on both iPad and iPhone, providing that you have a supported device.
The iPhone version is supported from iPhone X (iOS 15 and above)
We also offer Capture One Live, which is an online client viewing service that allows you to communicate with team members and clients alike, getting critical instant feedback on your images.
As a reviewer, you can view the images contained in the Capture One Live session on any device that has a web browser.
See more about Capture One Live here