Terms of conditions app

My goal is to create an app focused on commercial purposes that can be used for both iOS and Android devices. To ensure that the app is in accordance with the law, I need to include some terms and conditions. I have some special clauses and conditions that should be included, so I am looking for someone who can write up the terms and conditions for the application. This includes making sure the rights and liabilities are clearly stated, as well as the understatement of the misuse of the app. The freelancer should also be able to create into the terms and conditions the exact description of what the end-users agree to when using this app.
The app will be created in the UK and operating in Africa