Lightning Distance Calc Lite

Lightning Distance Calculator is an application witch allows you to measure the distance from a lightning strike basis of the difference in speeds of sound and light. Application also shows the precise impact location based on azimuth determined by the built-in compass.

The measurement results can be viewed as:
-history table
-chart
-on the map.

Features:
- Measuring the distance from a lightning strike;
- Indication of the exact impact location;
- Presentation of the impact location on the map;
- History chart;
- Sending an e-mail with thunder maps;
- Various distance units.

This is FREE, limited version. Feel free to check the full version.

更新履歴
-now timer doesn't stop when scrolling table :)
-remove preferences from settings app;
-now you can change distance unit by tap in distance area;
-change heading mode by tap in heading label area;
-add some usage statistics to let us know your preferences;
-proper handle heading in upside down orientation;
-limited measure distance (to ~1000m) in demo version (sorry);