If there's one main point, I think it's this from their website: "Userflow works as a layer on top of your app, containing tooltips, modals, buttons and more."
We don't "sit on top of your app." We're built into your actual app natively which makes it easier to build for both quality and any custom functionality you need.
We're taking the same developer-centric approach to onboarding at Dopt and this really is fundamentally different than the existing tools (Userflow, Pendo, Appcues, etc...).
1. We've not focused on mobile right now, but you can see the original RN package we built here (https://www.npmjs.com/package/react-native-onboard). For pricing, we're still figuring that out, but it would be competitive with Appcues e.g. free trial and starting around $299/mo
2. Thanks for the feedback. We'll get the docs live ASAP.
3. When we say native we just mean it's not a janky iframe or web view, it's actual React Native code.