Fix bugs of iPhone Apps - open to bidding

There are 2 iPhone applications of which bugs and crashes are to be fixed. 1) Passenger App 2) Driver App Both the applications work simultaneously, enabling the passenger to book a taxi and driver to accept bookings. Payment gateway used is Stripe. Issues - 1) When driver accepts booking request, sometimes the passenger app crashes and we are presented with a black screen. 2) When driver accepts booking request, driver app unexpectedly crashes. 3) Driver tracking is not working on passenger app. 4) Replace existing Stripe Keys with new ones. 5) Trip status "journey" should be "ride in progress". 6) Fare is not increasing by time or mileage. 7) Fare has to be dynamically calculated for different vehicle categories as per values returned in Login API 8) In case of a 3rd party booking, passenger app crashes when trip ends. 9) In 3rd party booking, there were no passenger details displayed or payment method to be selected as chosen when creating a booking. 10) In 3rd party mode, the driver app must only allow payment option as returned by the API. 11) Driver app freezes after trying to end the trip from a third party booking. Driver cannot end trip after selecting cash. 12) Passenger app shows black screen when driver tries to end trip on third party booking. 13) In 3rd party mode, end trip button is not visible and trip cannot be ended by driver. 14) Filter button should not be visible when list items are empty. 15) Passenger app crashed while ride was in progress when passenger pressed on "booking 2". You are required to resolve the issues mentioned above on priority basis. Please bid only if you can deliver in a very ambitious time-frame of 3-4 days.