When comparing UXPin vs MockFlow, the Slant community recommends MockFlow for most people. In the question“What are the best mockup and wireframing tools for websites?” MockFlow is ranked 29th while UXPin is ranked 31st. The most important reason people chose MockFlow is:
Export to PNG, PDF and HTML formats.
Ranked in these QuestionsQuestion Ranking
Pros
Pro UXPin has great advanced features for prototyping
integration if this then dop that and custom javascript functionality
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 Export to PNG, PDF, HTML
Export to PNG, PDF and HTML formats.
Pro Easy to learn
Easy to pick-up. In few minutes you can sketch your first pages.
Pro Online software
You can use it online. No download, no install, no mess.
Pro Free basic account
The free basic account give you a lot of features, all for free, forever.
Pro HTML5 rendering
Use many Bootstrap components and get the HTML5 view quickly. Sketch, see, repeat.
Cons
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 Need a Flash plugin
Flash is a technology of the past. Unfortunately, they use it. "MockFlow requires Flash Player 10 or above."