How Long Does It Take to Build an App Without Any Coding Skills?

I seriously doubt you can get this done by summertime, especially with only two people. You’d need to hire top-notch talent and be willing to invest quite a bit.
You mention knowing your idea will work, but have you done any market testing? Often, people think their idea is amazing, but without funding or proper research, it can fall flat. I recommend focusing on the core features that make your app unique, getting it into users' hands, and then improving from there. Look at examples like The Social Network for inspiration on starting small and gradually expanding.
From experience, aiming for two years to develop something complete is much more realistic unless you can find and pay for exceptional developers. Be sure to detail every feature you want; that’s essential for serious developers to help you out.

Honestly, it's tough to give a concrete timeline without more details. It could take anywhere from a few days to potentially forever, depending on complexity and the experience of your team.

I appreciate your honest feedback, and I totally understand where you're coming from. The idea is based on a market in the Middle East that's ripe for technological growth. I believe that if this app gets off the ground, the marketing is key and will handle the rest. I would love to chat more and ask you a few specific questions about your experience if you’re open to that!