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 an iOS map and is recyclable by file sharing.
About settings:
Remove Ads - It removes ads to use in-app purchase, and shows a toolbar.
Units - meter, international foot, or U.S. survey foot.
Distance calculation methods - iOS Default, Haversine, Hubeny (Simple Formula), Bowring, or Hubeny (Original). Bowring's method is the best accuracy.
Reference Ellipsoid - WGS84 or GRS80.
GNSS Accuracy - It specifies the range of error to allow.
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.
Use Light Mode for Maps - The map is displayed in light mode even if you are using dark mode.
Notice:
Continued use of GNSS running in the background can dramatically decrease battery life.
