Hi, I am an iOS developer(Swift), and a Project Manager with the development in Android(Native), Ionic, Xamarin, React Native, Web & API Development. I am the point of contact for the project until it gets completed. We have experienced developers as. 1.7+ in both iOS and Android, 2.9+ in Web development in PHP, Angular, 3.6+ in Xamarin, 4. 5+ in React Native (for mobile), 5. 4+ in Ionic, 6+ in PHP & Magento & Wordpress. & API. So as per your requirement, we can complete the work and when you need we will deliver it. 1. Do you have UI/UX with proper explanation? 2. Once we have reviewed the requirement then only the price and timeline will be fixed. 3. Do you have API with the documentation? The price may be the same or may it get hiked, but I can not predict it without your actual requirement. We need milestone basis payments. As like we will start the first milestone once you put the safe pay of 1st milestone’s payment also. Once you are OK with the 1st milestone then approve the payment otherwise we will correct as per the description on the milestone. So after 1st milestone you approved, you will put the 2nd milestone’s payment into the bucket then I will continue the 2nd milestone. So once you are satisfied then you will approve the fund and then you will put the fund for the next milestone.