Resistance parsing (1K2, 1.2K, etc...): Joe Walnes of resisto.rs Resistor pair search: Dave Gough
Resistor visualization and appification: James Newton of massmind.org
On your smartphone, bookmark this page, then open the list of bookmarks, and select "Add shortcut to home".
Now, you have this web app, as a phone app, even when you aren't connected to the internet. You're welcome. .o)
(see how it's done)