Classic GUI technologies are known to be fast aging and non-portable, while they also are vulnerable, slow and buggy. In comparison, there is HTML - old, proven, highly portable and quick to adapt GUI building model. We are OK to drop some realtime app performance to gain nearly ultimate development opportunity - HTML is highly known very videly used tech. But, instead of slow and unsafe JavaScript, we propose to use much faster Hexa programming language, which looks very similar. There is also a solid bet on Vulkan graphics API, which should highly improve performance and responsiveness of apps.