1. Launch FireworksMeasure. The Camera Preview will appear.
2. Tap the display when you can see the fireworks.
3. Move your device to make the fireworks the center of the display.
4. Tap the display again when you can hear the fireworks' blasts
5. You will get the distance from fireworks.
Icons ware made by Maps Icons Collection http://mapicons.nicolasmollet.com These files are licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license (CC BY SA 3.0).
Copyright © 2011 Shogo Ichinose