[simonhorlick]

Flutter is by far the best UI library I've dealt with. Its like React, but without the nasty JSX syntax. The APIs are sane and thoroughly documented. Its layout model is (by design) super simple, so it's really quick to prototype and iterate. The developer tools are top-notch: great support in IntelliJ, hot reload.

But the best thing about flutter is the rendering. It's completely consistent across platforms because it renders every pixel itself and because of this it's also really easy to draw exactly what a designer envisioned.