"super handy" is a correct and usable expression in written English.
It is an informal expression that can be used to describe something that is really useful and helpful. For example: "The app I use for organizing my tasks is super handy."
This is super handy until you tried to do something like…collect date and time information.
In Box's case, you can send a file to your team right from Box. Super handy.
Airplay introduces easy ways to share media content from one Apple device to another, it's super handy around the house.
Something you can do on the desktop, but super handy when you're in a not-logged-in-state.
What the commercial was supposed to say: In a pinch, the Instinct's voice recognition is super handy.
Adding info to a shared grocery list, which you can accomplish thanks to IFTTT integration and apps like Evernote, is also super handy.
The stage is set and the new couple have just been announced as "married". You jump out into the aisle with your super handy-dandy camera phone and capture the moment for all of social media to see.
Their super-handy "most popular" and "closing soon" pages do exactly what they say on the tin.
This kind of eureka moment is super-handy for writing about because it's right there in your head, well remembered and available for trotting out on demand.
Among the most unusual lures are the super-handy parking spaces in the 19-story Sky Garage at 11th Avenue and 24th Street, where sales began in 2007 and ended this year.
This is a huge benefit for anyone who has both a Mac laptop and a desktop, but it's also super-handy for people who read their e-mail both on their Macs and remotely, via the Web.
