Walkr only counts when you're walking or running. If you are using other methods of transportation like scooters and cars, this will not be counted.
However, if you're biking with your phone in your pocket, there's a chance you will see an increase in your step count! That's since both your feet are moving to get you around, but any steps logged this way are not likely to be accurate. The most accurate way to count your steps will always be simply walking or running!