I haven't worked on long-term projects with Flexby; I mainly used the builder for testing – to see how it works and to create small pages for personal needs. Overall, it's a standard builder with a simple editor where website creation happens through blocks and elements. Standard features like responsive design and built-in hosting are present. Notably, it offers the ability to create quizzes, multi-landings, and geo-landings. In theory, I would use such a builder to promote various products through landing pages, especially considering the integration with useful third-party services, including CRM systems and payment services. However, at the time of my review, the choice of payment systems was quite limited – only aggregators like Robokassa, Yandex, and Tinkoff. As for usability, everything is at a high level here. I would describe the builder as modern: it's intuitive even for beginners and looks attractive. The performance is generally fine, but I can't assess the quality of their hosting in the long term. During the website creation phase and in the first hours after completion, everything was great. The code is definitely good, as the pages load quickly and there are no errors. The pricing policy was a bit disappointing, so I didn't end up using Flexby myself. For that money, you can find a more functional Tilda, although both builders have their pros and cons in terms of visuals.
