Pacer is a free Android app developed by Sprightly Interactive that tracks your speed and helps you set your own pace of activity. It uses GPS to detect your speed and alerts you with beeping, vibration, or both. The app operates with a choice of mph, km/h, or m/s, making it versatile for users worldwide.

One of the best features of Pacer is that it allows you to set your own pace of activity, making it a personal pedometer. It is perfect for people who want to keep track of their daily steps, distance, and calories burned. The app is easy to use and has a user-friendly interface, making it accessible to anyone who wants to lead a healthy lifestyle.

However, it is important to note that if you do not have a satellite connection, the app will wait to warn you of a reduction in pace until it can firmly establish your speed. Overall, Pacer is a great app for those who want to track their fitness progress and lead a healthier lifestyle.