The purpose of Flash Boom is simple. It will give you an estimate of how far away lightning is. The rule of thumb says to allow about 5 seconds for each mile (3 seconds for each kilometer). In reality it is more like 4.72 seconds per mile and 2.99 seconds per kilometer.
LicenseFree
File Size195.31 kB
Version2.1
Operating System iPhone OS 3.x iOS
System RequirementsRequires iPhone OS 3.0