Where we try to differentiate ourselves is that while Bubble etc. can theoretically let you create any app/product, in reality that means you're building all the small parts from scratch, and you end up having to basically think like a programmer.
We want to solve a much smaller set of problems really well – turning spreadsheets into Internal Apps and Customer Portals.
That means we've spent a bunch of time focussing on getting the things that everyone needs (User login, data security, lists, forms) really excellent so that you can build something really easily.
In fact, there's not really any "building", just "configuring" – you start with a working app as soon as you connect your data, and then customize it to look how you want.
Contrast that with tools like Bubble where you have to build out each screen, each form, the login page etc. manually.