I bought Sizze as soon as it launched but now I'm refunding. Here's why:

1. The app logic is in beta, and not much else is possible besides changing pages;
2. The CMS is built-in and has no way of connecting to other platforms like a webapp;
3. The code editor doesn't allow editing inside Sizze, it's only for code "visualization";
4. The support answers and roadmap are too generic for my taste, so it looks that there's no clear direction on what will happen in the short-mid term.

It has some pro's though:
1. It's easy to create a good looking app like Adalo but for a fraction of the pice;
2. The unlimited CMS might be great for an app that hosts a lot of media;
3. It allows exporting the code which could be great if you're a developer and just want a way to turn a Figma template into something workable.