Help finish an Iphone App that is almost complete. Code Language: Objective C

Our app is almost done but the developer doesn't have time to finish it currently. Most the work is complete but there are bugs that are affecting functionality. Also we need to change the pricing setup from an a-la-carte model to subscription, so need to tweak the triggers for that. The developer thinks there should be less than a weeks worth of work to complete things. Would also possibly be open to future assistance if/when needed to make changes/upgrades to the app.