DigiKey has a mobile app for you. Its not that I like Digikey better than any of the other major parts dealers like Mouser, Newark, Allied, etc. They seem to be the first ones with a searchable mobile app and it seems to work well and it saves time. One of the things that I do not have very much of these days is time so anything that can move a project or repair along is welcome.
I also don’t have anything against Radio Shack, either, they have simply moved away from the parts business.