
The app will be developed by the digital team behind the BBC's recent Focus magazine and Good Food apps in collaboration with Spellbound Entertainment, which controls international rights, publishing and licensing for the brand.
The app will adopt a magazine format and will roll out to coincide with the programme's relaunch on Disney Junior in the US in 2012.
'The Koala Brothers' was originally commissioned by CBBC in the UK – it now airs under licence on CBeebies – and has been acquired by more than 50 broadcasters across 155 territories.
The app will launch initially on iTunes for the iPad, iTouch and Mac and expand to Android devices later next year.
Pauline Cooke, publisher of pre-school titles at BBC Magazines, said: "We have a long-standing relationship with Spellbound and a great understanding of 'The Koala Brothers' brand, so we are very excited about working together to create something that’s truly unique in this market – a multi-layered super app for pre-schoolers."