I'm using it to build a small back office tool, using the Free version and it is fantastic. Mainly using it to integrate via API and no issues at all. It offers great flexibility and you can do "whatever you want" in terms of customisation. Great low code tool - highly recommended.
It's a really great application and has saved us a ton of time getting internal admin pages written for our applications. We're a team of three and things like admin pages always get pushed aside for revenue-generating features. Retool allowed us an easy way to stand up needed tooling.
Very useful tool, with a robust feature set. I've run into a handful of undocumented or poorly documented bugs in my short time using the product however, so I can't give it 5 stars. Also, there are a few UX things that are a little annoying (such as all form elements, in any form, sharing the same namespace for data keys).
Retool is the most useful tool in my tech stack. It enhances everything else and helps me overcome feature limitations in existing tools and with APIs.
