There is no app as such but you can track progress and update your activity on the site via your smartphone.
We have also introduced tracker integration with Fitbit. See other questions on this FAQ section on this.
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5x50 Challenge started with a vision to make people who are inactive become more active. Challengers become part of something that inspires, motivates, encourages you to live a healthier lifestyle. 5x50 Challenges are open to all. Individuals or groups regardless of age, health condition/ disability or fitness level can take part.
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