The Fitness+ service can be viewed on an iPhone, iPad or via an Apple TV set-top box. [Source: BBC]

Apple has unveiled a new personalised workout subscription service alongside new smartwatches and tablet computers.

Fitness+ collects health data gathered by an Apple Watch and then displays it alongside workout videos shown on a larger display.

The platform will compete with existing fitness apps on iOS from Peloton, Les Mills and Fiit.

It also poses a challenge to Fitbit, whose wearables benefit from their own health-coaching subscription service.

As many had forecast, Apple decided to hold back details of its next iPhones for a separate event.