The Vandersoft Half Marathon app is a free Android lifestyle app designed to help runners improve their stamina, endurance, and overall health to prepare for a half marathon. The app offers a 20-week program of interval training that gradually increases in difficulty. Starting with 1 minute jogging intervals in-between 1.5 minute walks, the program aims to strengthen the body and improve running performance over time.

One of the app's most useful features is the ability to listen to music while running, as the coach will chime in over the music to tell you when to run or walk. The app also gives users the option to use any music app and provides an overview of the running plan, allowing users to see future runs.

While on a run, the app displays helpful information such as how long you have been running, how much time is left on the run, and how much time is left on the current interval. Users can also pause the run or go to different intervals with the back/next button.

Overall, the Vandersoft Half Marathon app is a great tool for runners looking to prepare for a half marathon through interval training. Its user-friendly interface and helpful features make it a valuable addition to any runner's training routine.