Not as useful

I was hoping this would be n easy way to look up the value range of a comic I was considering buying. However this app seems to search in reverse of what I would need, returning every comic ever published under the search criteria given. If I do narrow it down to the year, I cannot easily go to a certain issue number because the number search asks for four numbers. All comics I looked at had three or less, and I was unable to find a combination that went to the issue in my hand.
What people like me need, is the ability to search for a comic name and issue number, select from a short list returned by the search, and be given a value-by-condition list.
Then if I am out shopping, I could use this info to decide if the asking price is a good deal.
A barcode scanner option would make shopping for silver age comics even easier.
I am not sure how a person could use this app to, maybe someone has a use for it. But for me, it is $3 I wish I had not spent.

Ffgvxuvgh about Zap-Kapow! The Comic Book Price Guide, v3.3.3