IOS professional required

i have a test app which a developer did last year , it is for just research purpose. it will working fine , but from last 2 months it is not , i asked the developer he said he will be back from holidays in next 3 days , as i need this fixed today so i have to search some expert here , he said just need to update the api and it will work , it is simple app which tell emotions ..start your bid with the word emotion so i can be sure it is properly read, it is simple app . i will share source code with the selected bidder. this may take an expert 3 to 4 hours. so budget is 30-40 .