When comparing Flutter vs Fuse, the Slant community recommends Flutter for most people. In the question“What are the best frameworks for developing cross-platform mobile apps?” Flutter is ranked 1st while Fuse is ranked 8th.
Ranked in these QuestionsQuestion Ranking
Pro Open source
Pro Great developer tools debug/hotreload/analyser
Pro Based on Dart language
Dart is a Java like language, easy to learn and startup fast for millions of Java developers.
Pro A single codebase for iOS AND Android
The developer's goal is to allow people to make apps running at 120 FPS.
Pro Compiles to native platform code
A key difference is that Fuse uses JS exclusively for app logic while producing native code for everything else, including population and manipulation of the UI.
Pro Native performance
Pro OpenGL UI
With the option to use OpenGL based UI components, Fuse is the only of the three platforms that offer a reliable “write once, run everywhere” approach where designers can control responsive layout, look and feel down to points, pixels and percentages, keyframes and easing curves.
Con Still in development
According to the website, Flutter is still in its early stages of development.
Con Based on Dart language
Dart is a Java like language, easy to learn and startup fast for millions of Java developers. BUT if you have to learn it ... it's a con.
Con Dart is unpopular and never gained serious community traction like Kotlin or Java
Con Does not support 32-bit iOS devices
If you plan on targeting iPhone 5, 5C or earlier, you can forget about Flutter.
Con Google has a bad history with product loyalty
Con Little reuse of web knowledge
Fuse doesn't support Angular or React so there is little reuse of existing web tech knowledge. The team have said they are exploring Angular 2 and then maybe React though.