App Name: IntelliRing -Your Smartphone just got Smarter

Cost: $2.00 for the full version + 30-day free trial

Developer: Sleekbit

App Market: Download Page

Description:

IntelliRing manages your phone’s ringer volume automatically based on different sensor data and ambient noise. Measurements are taken just when an incoming phone call arrives to determine different modes (‘in pocket’, ‘meeting mode’, ‘ambient’), resulting in better reliability and less battery consumption.