When comparing Precursor vs Avocode, 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 Avocode is ranked 33rd. 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 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
Pro Offers a 14-day free trial
Allows users to be able to get comfortable and familiar with the service before signing up and paying the subscription fee.
Pro Includes collaboration tools
Allows designers and developers to view revisions and interact on the fly by posting comments on the revisions instead of going through multiple e-mails back and forth.
Pro Cross-platform
Usable on Mac, Windows and Linux.
Pro Sketch and Photoshop support
Contains plugins that allow designers to share any designs with developers.
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
Con Subscription fee
After the free trial, users must set up your account with an option of their 3 subscription services - Garage, Business, and Enterprise [$8.99, $12.99, or TBD]. The cost is low, but monthly.
