Bit of truth: Software development is costly and laborious. There are many ideas for apps out there, the most important part is implementation (rarely the idea itself).

That said:
- I would suggest you first decide on a budget, expect to go over what you initially plan on.
- Write down what the application should do in detail (if you can't do this, expect costs to be 3x what they should be).
- Begin hunting for developers on sites like upwork and freelancer.

It's a long process, but doable - you'll need determination and capital.