Hi, i need to know something about your requirement, you told that exportable excel file,
please tell me that export from mobile or web,
i can do the both things, like user submit all fields, all data should save on server through internet, and you can get excel file from web admin panel, in this case you have advantage that the is save on database, so you can find data, edit data, or remove data before and after export.
contact me for these details, then i will tell you the timeline, and money is not my concerned right now, you can pay me the amount, which you want to pay, i am interesting to make good reviews to make my career bright on freelancer. hopefully you will contact me for this job, i have 2 years experience on working in development field. i have expertise in php, nodejs, javascript, phonegap, jquery.