Fluid UI vs ForeUI

Fluid UI is a web-based tool for making, previewing, sharing, and exporting mobile app mockups. It supports interactive web and mobile prototypes with taps, swipes, clicks, and other gestures, plus page effects such as fades, flips, and pop-ins. The built-in library contains more than 2,000 components spanning Material Design, iOS, Windows, and wireframe styles. Teams can collaborate on cloud-saved projects in real time. Reviewer mode supports shared click-throughs, chat, annotations, and comments, and the service also supports remote user testing sessions. Fluid UI runs in Firefox and Chrome, offers an installable desktop client, and has Android and iOS preview apps. There is a free plan and a free trial. Paid plans include Solo at $8.25 a month for five active projects, one user license, and unlimited reviewers; Pro is $19.08 a month, and Team is $41.58 a month.

ForeUI is a desktop tool for making mockups, wireframes, and interactive prototypes for applications and websites. Users can define prototype behavior with flowcharts, then run the result as an HTML5 simulation in a browser. Multiple interface themes let designers change a mockup’s style. Designs can be exported to PDF and image formats, while prototypes can be exported as browser-runnable DHTML. Reusable custom elements can include behavior and be packaged into libraries. Generated HTML5 can communicate with back-end web services through a JSONP API or YQL proxy. The ForeUI Store provides downloadable elements and libraries through the app or a browser. The maker describes the tool for sharing ideas, reviewing design concepts, gathering feedback, and usability testing. ForeUI runs on Windows, macOS, and Linux. Its 15-day trial includes all features, but saving and exporting are disabled after the trial. The Individual license is listed at €130 a month and includes one year of upgrades, with permanent use of versions released during that period. Sales are non-refundable, and the maker recommends evaluating the trial before purchase.