Battery

I recently downloaded this App because i wanted a GPS that works off-line; this i have to say is a wonderful gps navigation system( even tells you when the nearest gas stations, etc are!) One of my main worries is the battery getting hot! Should i delete this app or is that usual and will it ruin my phone; If anyone can get back and let me know, id appreciate it.

kevin/Superbad about Sygic GPS Navigation & Maps, v16.4.4