Open Wifi Sonar looks for open wifi networks nearby and emits some sounds when it finds one. Depending on the wifi signal power, Open Wifi Sonar emits from one to six sounds, then you can connect to the network with a simple touch.
You are able to download the .apk setup package of Open Wifi Sonar 1.0.2 free of charge and have a look at users' reviews on Droid Informer. This file size doesn't exceed 1 MB and the app can be launched flawlessly on Android 2.2 and above. The antivirus report demonstrates that this application is totally safe. Random Oracle Software has created Open Wifi Sonar that lies within the Tools category.
Users rated the app 3 on Google Play.