LetsWalk is a free lifestyle app available on iPhone that allows users to track their daily walking activity and share it with friends. With LetsWalk, you can get a daily report of your steps, duration, distance, and calories burned. The reports are displayed both daily and weekly, giving you a comprehensive overview of your walking progress.

One of the standout features of LetsWalk is the ability to compete for a weekly ranking with your Facebook friends. You can add friends and challenge them to increase your daily walking activity and improve your ranking. The app also sends you weekly summary emails and notifications of your ranking, keeping you motivated and engaged.

In addition to the competitive aspect, LetsWalk offers achievements for walking records. You can earn achievements for daily and weekly walking milestones, as well as for your ranking. This provides an extra incentive to stay active and reach your walking goals.

LetsWalk supports the M7 co-processor in iPhone 5S or newer, allowing for accurate tracking of your walking activity. However, it's worth noting that continued use of GPS running in the background can decrease battery life.

Overall, LetsWalk is a great app for anyone looking to track their walking activity and stay motivated. By sharing your progress with friends and competing for rankings, you can develop healthier habits and improve your overall fitness.