IOS and Android app Fixes and Upgrade

Hi all and thank you for reading our project. We have an endless runner game that need upgrade and fixes. We have been working with an app developer for many years, but can not get in touch with him any more. We are therefore looking for a new expert app developer to work with us in the future. The first task will be to upgrade and do some fixes for our endless runner game. Before you read more of the project, you must agree to the following: 1. Payment will only be released after completion of the project – Not before or during the project. 2. You must be a skilled app developer with years of experience. 3. You must provide excellent communication. 4. You must take pride in your work. Summary of the project: 1. Upgrade the Android and IOS to the latest version 2. Change one image at the start of the game 3. Change credit and version text in the menu 4. Fix the Leader board so it work with Facebook 5. Fix the Facebook and twitter login, invite and visit links. 6. Fix the “Feedback Center”. 7. Change the pop-up at the beginning from “Earn a diamond by giving G+” to “ Earn a diamond by posting to Facebook” 8. Fix duplicated character when reaching new high score. 9. Add my code for: AdColony. AdMob, InMobi, Chartboost, Apptentive, Facebook, Twitter New features wanted: 1. We are interested using SNAPP for Login, invite and share on Snapp ([login to view URL]) 2. Chat function where users can send messages to each other. NOTE: Candidates we find interesting will get an detailed description of the project to look over, before we agree to start working together. We hope to find and excellent app developer we can work with on this project and on other projects in the future.