What's great
This is the first workflow automation tool I have tried to use in a few years, and I will never leave it. If you are not a terribly technical person but generally understand how automation and AI works, you'll have you're first workflow and full-blown agent up in no time with Relay.app! The embedded AI agent that literally builds other agents for you (or just helps) is absolutely genius. And the UI is super intuitive. Great product, Jacob!
vs Alternatives
I didn't really research before I started using it, just wanted to play around. But then I started seeing other folks in my circles trying to implement flows with n8n, and I literally saw them writing/reading code (or what looked like it). This told me I made the right choice.
How well does human-in-the-loop approval work in practice?
The AI agents helps you build your flows and asks for your approval before it implements. In some cases, the agent does not have rights to execute certain tasks - in these cases, it gives you step-by-step instructions for what to do.
What AI features are most useful day-to-day?
The AI agent that helps you build your agents/flows.
How does it handle PII and data retention policies?
I honestly am not totally sure, have not reviewed, only using this in my personal life so far.