Hello, my name is Pavel and we are Simple Dino s.r.o. You can chcek our references here in our profile portfolio or you can go to our personal website (link in our profile).
I would like to give you two options.
The first option is to give the project to the freelancer with the lowest price and pray to get a result you were hoping for.
The second option is to rethink your budget and hire a team of frontend, backend and design enthusiasts. As you can see, we have lots of experience in web and mobile design and developement. We have worked for many (big and small) clients. We have developed both iOS and Android apps, which work as catologues, navigation apps and many more. But i do not see a possibility, how we could do even a very basic app in the range of your budget. You have to take in mind, that you have to pay to at least 2 people for they hard work (designer and frontend / backend developer).
So please consider this and if you like our work and want to discuss it, feel free to contact me anytime. Then we can make a accurate price calculation (with proper project data in mind).
I look forward to our cooperation.
Best regards, Pavel from Simple Dino s.r.o.