When comparing UXPin vs Principle, the Slant community recommends Principle for most people. In the question“What are the best tools for prototyping mobile interactions/animations?” Principle is ranked 12th while UXPin is ranked 13th. The most important reason people chose Principle is:
You can find videos for the Principle app course [here](https://www.youtube.com/playlist?list=PLWlUJU11tp4deQOnSFNn_ekpS9GA5_7yP).
Ranked in these QuestionsQuestion Ranking
Pro UXPin has great advanced features for prototyping
Pro Actively developed
UXPin is constantly being updated with new features.
Pro Import from PhotoShop and Sketch
A pro UXPin account will allow you to import existing projects from PhotoShop or Sketch.
Pro Extensive library of elements and patterns
UXPin offers elements from a wide range libraries. This includes responsive frameworks such as Bootstrap and Foundation, and libraries specific to mobile prototyping.
Pro Comprehensive help & examples
You can find videos for the Principle app course here.
Pro Simple Sketch import
Import Sketch layers easily to animate your designs.
Pro Build iOS transitions & animations easily
All the iOS easing info is built-in.
Con Expensive subscription model
$29 per user/mo ($350 pa) will soon rack up compared to a standalone product like Axure PRO ($450) which has a license that lasts years (they have given out free updates for the last 2 versions).
Con Steep learning curve
UXPin is one of the more complex prototyping tools. Combined with a lack of documentation, it can be discouraging for first time users.
Con Mac only
Sadly iOS centric.