With Silver Preview, you can test prototypes and preview artboards created using a combination of Sketch App and Silver for Mac (currently available by invitation only).
As a designer, you would use Silver Preview as a companion app to Silver for Mac by syncing it via USB or over WiFi. You can then mirror your current artboard or preview entire flows, while you design them in Sketch. Silver Preview updates automatically as you make changes to your designs.
When youre happy with your designs, you can share the prototype with reviewers and other stakeholders. Reviewers will also need Silver Preview installed on their iOS devices to view your shared prototypes.
Silver Preview detects components that you create in Sketch using the Silver Plugin. It will automatically convert layers from Sketch into fixed Headers and Footers, live Input Fields, and embedded WebViews. This helps you create prototypes that look and feel like the real app, but with minimal effort.