A couple of months ago I spent a few weeks trying out Flinto, Framer, ProtoPie, Origami, to see which prototyping tool suits my workflow the best. Out of those four, I ended up choosing ProtoPie as the winner.
I've been using Protopie for years and it's amazing. The power and flexibility that it's brought to me and my team is pretty amazing. There isn't a single prototyping app that comes close to what you can do here. You can build as complex or as simple a prototype as you'd like. I've used it to work up full app flows with a crazy amount of conditional interactions and situations. It's the best thing you can get without having a developer build a workable app for you.
Their support guy Fredo is very responsive and helpful. And they're working to improve all the time with feature requests.
One of my favorite prototyping tool. Reminds me of the fantastic Pixate app (killed by Google) π’