Australian officials are pleased that more than a million people have downloaded an app designed to accelerate contact tracing for coronavirus despite some privacy concerns.

Within 12 hours of the Australian-developed COVIDsafe app becoming available late on Sunday, 1.13 million of Australias 26 million population had downloaded it onto their smart phones.

Chief Health Officer Damian Murphy has said that he was really excited by the app's early popularity.

If users of COVIDsafe are diagnosed with the virus, they can upload the apps encrypted data logs, which identify other users who have been in close proximity for 15 minutes or more in the previous three weeks.

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