Under Armour has quietly acquired Gritness, an Austin-based search engine that helps people find and join workouts.

The acquisition was first reported by MobiHealthNews. Terms were not disclosed.

Under Armour bought MapMyFitness in November 2013
and then acquired MyFitnessPal and Endomondo
in February 2015.

Gritness (Gritness.com) launched in Austin, Texas in June of 2013 by co-founders and avid cyclists, Jason Whitson and Tommy Fad, according to the company's website. Whitson and Fad’s vision is to ignite group fitness by creating a digital resource that allows members of the fitness community to discover, organize and create fitness events. Today, Gritness hosts thousands of group and event listings helping organize fit lifestyles by focusing on an underserved area of digital fitness, pre-activity tasks and coordination.