Add graph to existing iPhone application

I already have an Xcode/iPhone application that lets the user input their username and password to a specific website. Once that is done, the user will see statistics related to their account. These statistics are for a specific time range. For example, today, yesterday, last 7 days, last 30 days, ... Screen 1 of the app shows the statistics for today and has a calendar button on the top right. If you click that, you can change the time range with the use of buttons. Screen 2 has the two settings (username and password). Currently the statistics are displayed in a table. When clicking a row in the table, nothing happens. What I want you to do is add graph functionality, so that a graph is shown when clicking one of the rows. Say that I've asked the data of the last 7 days, then my statistics table will show rows with the sum for the last 7 days. This data is currently fetched by calling a webservice that returns XML. The graph that you will add, will show the data spread over the last 7 days. So you will have to call another webservice function. The syntax is very similar to the one already used. This project is just for the graph, including the webservice call needed for the data. Please submit your bid and also include how much time you need and when you can start. Also, submit your price per hour. If you do a good job, many more features and changes will be requested, so please see this as a long term project. Fyi: I had a coder that did the previous work, but he disappeared :( He was going to do this project for $30 to $50. PS: Please add the word 'tomato' at the end of your post, so I can see that you've read the complete description.