When comparing UX-App vs Precursor, the Slant community recommends Precursor for most people. In the question“What are the best mockup and wireframing tools for websites?” Precursor is ranked 9th while UX-App is ranked 26th. The most important reason people chose Precursor is:
A free tier with all mockup functionality is available. Free tier is limited by lacking ability to save mockups privately and additional services provided by Precursor like voice chat and registered subdomains.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Prototype with graphical JavaScript
UX-App uses a drag and drop puzzle like JavaScript representation. Unique and expressive
Pro Mock up & prototype in the browser
Allows you to mock up with real HTML, and present expressive prototypes in the browser. Has lots of conveniences like team chat, notes, and a share link to present prototypes.
Pro Long free trial & cheap subscription
It's possible to start without creating an account. Creating a free account extends the trial, and the memberships are cheap @ $5/month.
Pro Free tier
A free tier with all mockup functionality is available. Free tier is limited by lacking ability to save mockups privately and additional services provided by Precursor like voice chat and registered subdomains.
Pro Collaborate in real time
Share a link with teammates and they can jump right into your doc. You'll see their changes as they happen, and the built-in voice chat makes design meetings effortless.
Pro Highly polished UX
Cons
Con Really simplistic
Basic tools (line, square, circle) wich do no stick together: if you move a circle the attached line won't move making reengineering the model simply impossible