As a fitness editor and a dog owner, I spend a lot of time walking and running outside, whatever the weather. Normally I’ll have completed a couple of thousand steps before sitting down at my desk at 9 AM, and more often than not, my day starts with an hour-long hike with an out milk latte in my hand, and my cocker spaniel in tow. So when I wrote an article about how to get paid to walk, I decided to download an app to my phone, just to see how much I could earn on the move.

The app I decided on was WeWard — a walking app with more than 10 million users in Europe that recently got releas...