Hello,
I am an iOS app developer based on Swift and Xcode. I have two commercial apps on App Store, WikiMedicine and Street Explorer. Street Explorer extensively uses Google Maps and Directions SDK and API. Please see my profile for more information and my qualifications. I also have a good experience in implementing Firebase services and APIs (eg: Firebase Database, Firebase Storage, Crashlytics, In-app Messaging, AdMob, ML Kit, Google Maps, Places, Directions). I believe I can help you with the iOS app. Let me know if you’re interested.
Best regards,
Pouya Khansaryan