Write an iPhone application

Hi there! This job is to expand an existing iOS mobile application. The app is 'Granny's on Fire' - it was built using Unity..... it is a simple, finger-tap game where the user continuously jumps up layer-by-layer, ensuring the timing of their 'taps' is spot on..... The expansion of this application needs 2 major additional elements.....both of these elements are inspired by an existing iOS application 'Splashy Fish' (a similar app to Flappy Birds, with the main distinction being the main character is a fish and the fish collects a coin each time it passes through an obstacle. Those coins can be spent in a shop, to buy a new outfit for the fish - turning it into a super hero, or a striped fish, spotted fish, etc etc.....And so...the development additions for Granny's on Fire are as follows: 1.) each new layer sees the user collect a gold coin......a coin appears in the gap that the user jumps up. 2.) any coins collected, remain stored in the users account until they are ready to spend those coins.....they can spend those coins on shopping for a new outfit for the granny. The shop should offer the opportunity to purchase 20 different outfits, each costing progressively more coins....once coins are spent, they disappear from the users account. The highest amount of coin spend in the shop will allow the user to enter their physical delivery address, where they will receive a real Granny's on Fire t-shirt, delivered to them entirely free of charge (it only costs them the gold coins they have earned in the app) 3.) integration with mobile ads - Unity..... 4.) Finishing touches - ensuring the integrity of all elements of the app are sound, specifically that all elements function as they should! Proper formulated testing process is crucial! Looking forward to working with you