ISpy application constantly monitors the sound level in the surroundings. If the sound level exceeds the Configured sound level, calls the user configured phone number, at user defined intervals. You need 2 phones to use the application. First the Android phone that is running the ISpy application and monitoring the sound level.
ISpy Detective was originally designed by Netsolvers.Net and it belongs to the Productivity category. Over 50K users downloaded and set up the tool and the latest release was on Oct 8, 2015. According to the latest info, this application is rated 3.5 on Google Play.
There are ads in the app. It's free of charge to get the .apk file of ISpy Detective and you can take a look at users' reviews on Droid Informer. This application installation package requires 4 MB of free space to run on Android 2.3.3 and above. The app was scanned for viruses and it was found 100% secure.