Macro/Hotkey app

Hi everyone I've just joined the forum and I was hoping you might be able to help me out here, I work from home and I use photoshop and firefox through the day and find myself using the same keyboard shortcuts over and over and over again, what I'm looking for is an app I could use on my tablet (CNM Touchpad 7" (from argos, terrible yes I know haha)) that would let me set some hotkeys, that once pressed ont he tablet are used on the computer, e.g I'd set a hotkey ctrl+n on the tablet, press it and photoshop opens a new image, I've tried looking through google for such an app, but I think its probably the wording that isnt showing any results, any help here would be greatly appreciated