Pace Ruler

This is a simple tool to survey distance on foot. The distance is calculated by using GNSS (Global Navigation Satellite System). A survey result (tracking data) can be checked with iOS map and is recyclable by file sharing. About settings: Remove Ads - It removes ads to use in-app purchase, and shows a tool bar. Units - meter, international foot or U.S. survey foot. Distance calculation methods - iOS Default, Haversine, Hubeny (Simple Formula), Bowring or Hubeny (Original). The Bowring's method is the best accuracy. Reference Ellipsoid - WGS84 or GRS80. Strict Mode - It checks a vertical error. Automatic Shut Off - If you do not move for about 5 minutes, surveying will be stopped automatically. Do Not Use Thumbnail - It does not display thumbnails. Notice: Continued use of GNSS running in the background can dramatically decrease battery life.