Zombies, Run developer Six to Start has been acquired by the Australian fitness firm OliveX.
The deal covers all of Six to Start's issued shares, with OliveX paying USD $6.65 million upfront, with a further $2.85 million tied to future performance.
The UK-based Six to Start is a specialist in gamified fitness apps, the best known of which is Zombies, Run. It has also released The Walk and Zombies, Run 5k.
Zombies, Run has 300,000 monthly active users, around 50,000 of which pay for a subscription. According to a statement from OliveX, the average revenue per subscriber is more than £25 per year.
Keith Rumjahn, CEO of OliveX, said that the acquisition of Six to Start will "bring immediate value to OliveX."
When the acquisition is complete, Six to Start founder and CEO Adrian Hon will become chief innovation officer at OliveX. In addition, he will continue to serve as executive director at Six to Start.
We talked to Hon and Zombies, Run writer Naomi Alderman in 2013, when Zombies, Run was in the midst of explosive growth -- you can read the interview here.