Mobile app with GPS tracking and live streaming

Need a complex mobile app developed within 3 weeks. Teams which have the capability of delivering complex projects within tight timelines and have experience of integrating with live streaming and GPS tracking - please send me on chat- ; Your team details + 2 most complex apps you have developed with the time you took and the approximate fees charged. Lastly if you have the license and capabilities of using salesforce as a platform for development. I will get back to the partners which fit our requirements and budgets. This is urgent so do send soon