When comparing Briefs vs Prototyping on Paper, the Slant community recommends Prototyping on Paper for most people. In the question“What are the best tools for prototyping mobile interactions/animations?” Prototyping on Paper is ranked 20th while Briefs is ranked 21st. The most important reason people chose Prototyping on Paper is:
Prototyping on Paper supports both Android and iOS.
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Pros
Pro Easy to share with clients
Briefs makes it easy to share prototypes with clients through the use of their iOS app, BriefsCase.
Pro Multiple device support
Prototyping on Paper supports both Android and iOS.
Pro Based on sketched wireframes
Prototypes made on PoP are based on sketches made on paper or a whiteboard, which are later photographed or scanned and uploaded into the app. Once that's done, hotspots can then be added, which register tapping or several gestures.
Cons
Con Steep learning curve
There is very little learning material available online for Briefs. The community of active user is small, making it difficult to get any questions you may have answered.
Con Only supported on Mac/iOS
Con Not well suited for complex prototypes
PoP is built to be a tool for quick prototyping, especially in participatory design sessions. For complex prototypes with a lot of screens it would require a large number of images to be used and this can make any project hard to maintain.