Google is expected to unveil a fitness data aggregator, which will allow users to track information from a range of popular fitness apps.
The software will have open APIs so developers can sync their fitness apps with it. Google is also expected to announce a raft of partnerships with wearable device makers at its I/O developer event on 25 June, sources told Forbes.
At this time it is unclear whether Google Fit will be unveiled as a standalone app or baked into Android.
The launch of such a service is unsurprising, as tech firms battle it out to attract consumers to wearable devices.
Samsung already has a range of 'Gear' watches, which can be used to measure steps, heart rate and calories. However, uptake of these devices has been limited and networks - such as Vodafone are giving away the watches free with Galaxy S5 devices in an attempt to boost interest.
Microsoft is expected to launch a health-related smartwatch in the summer. Redmond is focusing its efforts on the mobile market after missing out early on the smartphone rush and hoping that cross-platform functionality will attract users.
Meanwhile, Apple has confirmed its HealthKit app will debut with iOS 8 in September. This will allow users to monitor sleep cycles and other core health metrics like blood pressure and oxygenation levels.
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