Magic word is ASR
Approach to the job:
Dear, i reviewed the excel file and understand the formulas. i can definitely fix the bugs in the application.
I am experienced iOS developer. I have done with couple of projects and, which are available on App Store. I have very good experience of iOS iPhone/iPad apps and I can definitely do this job and can also give suggestion to enhance the app capabilities with take care of your preferences at very low rate and with in your timeline.
Dear, you can also see my reviews. I am best in development, fixing bugs and enhancement of the project. Also I am a good team player and can work with you as a team or individual without any problem. I will also give you full support throughout the project.
Also I can start the work right now.
Kindly send me details. Thanks
Regards