AudioBoo 
Record audio messages – or “boos” (up to 5 minutes in duration) – and post them, with titles and geo-tags, on Facebook, Twitter or the AudioBoo website. Word of caution: be prepared to jostle for space alongside Stephen Fry, one of AudioBoo’s most noticeable regulars.

Visit www.audioboo.fm. Free for Android (v1.6 or later), Apple (iOS 4.0 or later) and Nokia devices.

 Bleep!BOX
A drum machine, synth and sequencer rolled into one app that focuses more on live music and tweaking than on preset samples.

Visit www.bleepboxapp.com. $9.99 (about R495) for iPhone and iPad (iOS 3.0 or later).

Cheese Cutter Whoopee Cushion
The classic gag app. What more is there to say? Free for Apple devices (iOS 2.2 or later).

Classic Songs Piano Songbook
One for musicians, with 14 full-length score sheets, for Ben E King’s Stand By Me, Otis Redding’s Try A Little Tenderness, Procol Harum’s A Whiter Shade Of Pale, Van Morrison’s Brown Eyed Girl, Waterloo Sunset by The Kinks, and Somethin’ Stupid by Frank and Nancy Sinatra, among others (lookout for more later this year). $2.99 (about R149) for iPad (iOS 3.2 or later).

Decibel Meter
Switch between a simple level meter and a graph view to read sound (or snore) levels around you (the range goes up to a 110 decibel sound pressure level).

$1.99 (about R99) for Apple devices (iOS 3.0 or later).

iTabla Pro
An app dedicated to Indian classical music sound samples (featuring 36 taals, with multiple variations) played on the tabla, a set of five-string tanpuras, a sur-peti (shrutibox), swarmandal (Indian harp), and manjira (hand cymbals).

Visit www.upasani.org. $24.99 (about R1,235) for Apple devices (iOS 3.0 or later).

Saavn Music
That’s the South Asian Audio Visual Network, and gives you over 200,000 Bollywood, bhangra, bhajan and ghazals to select from.

Visit www.saavn.com. Free for Android (v1.6 or later) and Apple (iOS 4.0 or later) devices.

SoundHound
A sort of Google Goggles for music – can’t recognise a tune? Play it for a few seconds, and let SoundHound trace it for you. You could try humming into it too (results will vary), and the app will try and fetch you lyrics as well.

Free for Android and Apple (iOS 4.0 or later), and R99 for Nokia devices.

StudioTrack
This multi-track recorder and mixer lets you import (or even Wi-Fi sync) audio files to muck around with on its on-board effects processor, which includes a compressor, tempo-synced delay and reverb, among other features.

Visit www.sonomawireworks.com. $19.99 (about R990) for iPad (iOS 4.2 or later).

SoundTracking
The idea, as makers Schematic Labs describe it, is to record and share “the soundtrack to your life”, where you post song snippets, with a photograph and location if you like, on Facebook, Twitter or Foursquare.

Visit www.soundtracking.com. Free for Android (v2.2 or later) and Apple (iOS 4.0 or later) devices. Visit www.marketandroid.com for Android, www.itunes.com for Apple and www.store.ovi.com for Nokia devices.