R-navi is a free Android application developed by R-biesINC. that predicts the participant's current position and finish time from the record data of the running competition. It is available for all races under RUNNET's "Ouen navi" service in domestic races in Japan.

On race day, users can track their family and friends' position and progress visually, making it an excellent cheering tool. The replay mode allows users to relive the event by displaying the participants' positions and enjoy the realism of the event day.

The app offers features such as tracking multiple runners, sharing participant's prompt records to SNS, displaying the user's position, and sending cheering messages to participants. The basic functions of the app are free to use. However, users can subscribe to the Premium Plan to maximize their fun. The Premium Plan enables users to track 5 to 50 participants (free plan: maximum 4) and view the results of the previous 30-day event.

For inquiries, users can contact RUNNET via their inquiry form by selecting "About smartphone application" as the question genre. R-navi is an excellent cheering tool for running competitions that gives users an interactive experience while following the participant's progress.