Hi Heittor
How are you?
I have gone through your complete management App and I am very sure I can help you in this as we have done many CRM as well as Software web based as well as App based.
So please come to chat so that we can have some technical understanding to start this project asap.
We are the IT company having 5+ years of experience in App and Web development, App and Web designing, backend, SEO/SMM cloud services, and enterprise solutions.
We have knowledge of Xcode IDE(Objective-C), Swift, Eclipse IDE, Android SDK, ADT Plugin, Java Programming, JSON, XML, Utility APIs, MySQL and SQL server database, super level UI design and much more.