Startup Idea: Warranty and Purchase Tracker Software

Startup idea to develop a software program which allows users to easily input and manage information about their major purchases. This includes recording the date of purchase, warranty length, whether an extended warranty is available, and the payment method used.

I would want a software program that I can easily input information on all the major purchases I make. It would cross-reference when the merchandise was bought, the length of the warranty, extended warranty, if applicable; and the method of payment.