Why is my step number different in this App than in other tracking Apps i use? We use sensors and a complex algorithm to determine your step count. Each app has a different algorithm that causes variations between data. Related articles My steps/ activity tracking data does not seem accurate in the App, why? How do I find my watch caliber number? Can I send my activity data to other Apps? Why doesn't the Citizen app recognize my watch? How do I get a manual for my watch?