ZRX

Run in the real world. Become a hero in another.

ZRX is a fitness app like no other. We make YOU the hero of thrilling immersive stories.

Get motivated to move by incredible audio storytelling that draws you into the zombie apocalypse or epic super hero adventures. It’s so much fun you’ll forget you’re working out!

Whether you’re a total beginner or a seasoned marathon runner, ZRX works anywhere and at any speed. Jog in a park, run along a beach, or walk along a trail – you can even work out on treadmills or in a wheelchair.

Love exercising to music? You still can! ZRX integrates the story with your own music playlists.

ZRX is a fully-featured fitness app with GPS tracking and detailed statistics. As you progress, you’ll also unlock in-app story extras and lore that immerse you in our incredible worlds.

Our experiences:

ZOMBIES, RUN!

With 10 seasons and counting, this much-loved audio experience is co-created by award-winning novelist Naomi Alderman. Rebuild a community from a few shivering survivors into a fortified beacon of civilization. Can you save your friends and uncover the truth about the zombie apocalypse? Try Zombies, Run! for free, or subscribe to unlock all 500+ missions.

MARVEL MOVE

Seek adventure alongside your favourite Marvel Super Heroes including the X-Men, Thor and Loki, Daredevil, Doctor Strange, and Scarlet Witch. This collection of new stories, from writers including comics royalty like Tini Howard and Gerry Duggan, features immersive audio design and gripping plots to keep you coming back for more. Try Marvel Move for free with a 1 month trial, or subscribe to unlock all episodes.

Press coverage:

ANDROID CENTRAL: “A decade later, Zombies, Run! and its new Marvel Move expansion are as great as ever”

T3: “Listening to the stories about my childhood favourites certainly filled me with nostalgia, which made me appreciate being part of the story even more”

THE GAMER: “Six to Start has more than a decade of experience gamifying exercise, and there’s a lot of clever things Marvel Move does to help motivate you”

Notes:

Zombies, Run! and Marvel Move have separate subscription plans. Subscriptions will be charged to your Google Play Store account after your confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24-hours before the end of the current period. Go to your Google Play Store settings to manage your subscription.

Full terms and conditions and our privacy policy are at https://zrx.app/eula and https://zrx.app/terms

Continued use of GPS running in the background can dramatically decrease battery life.

©️2025 Six to Start ©️2025 Marvel