Klevgränd has announced the release of a new app that transforms your iPhone into a shaken percussion instrument.

The initial version of the Rassel – Pocket Shaker comes with four different instruments: Egg, Shaker, Tambourine and Bells.

The app is based on a unique audio rendering engine that accounts for continuous velocity changes based on how the sampled instruments are agitated. The device’s gyroscope is directly mapped to this velocity which makes any movement sound the way a real instrument would.

Percussionists world wide no longer have to carry all those superheavy maracas and tambourines around. Now they can always have what they need for any impromptu jam session, right there in their pocket!

And not just professional percussionists either! Rassel from Klevgrand is loads of rhythmic fun for everyone. Are you always turning down invitations to go hang out by the campfire, because you just don’t know what to do with your hands when the music starts playing? No more! Now you’ll have just what you need to join in – ON YOUR OWN PHONE!!!

The app is free to download from the App Store.

More information: Klevgränd