This app is designed for the Samsung Galaxy Nexus and works in wireless networks with multiple routers / access points where the SSID of each is set to the same value, the security settings are the same, and each is set to a different channel/frequency as required by the wifi specifications for roaming. If you have two (or more) routers or wireless access points (AP) in your home or office, then this app selects the strongest one as you move around the building ... if your network is configured appropriately.
This app does not fix the wifi power consumption display bug! Some phones that incorrectly calculate wifi battery consumption due to a driver bug, might show figures as high as 30%! In reality the app does not use that much power, and can save power and give a longer battery life because when the wifi is connected to a stronger AP, your device uses less transmit power. The power consumption depends on your wifi chipset - in the Galaxy Nexus it is shown around 2% - 5%.
This app does not replace any Android functionality - you select which network you are using as before. This app does not change networks - it only selects the strongest AP from the network you are using.
The app is very lightweight - it sits in the background receiving measurements from the Wifi drivers. It only does something when the signal level is weak and there is a stronger signal from another AP in your network.
The app includes an algorithm to prevent frequent changes when two APs have a similar signal strength.
In many mobile phones this functionality is performed by the wifi drivers. However in some Android devices this does not work, which is why this app was developed.
If it works without problems on your phone, please leave a comment below (with your phone model and Android version).
This app is only developed for the Samsung Galaxy Nexus, though we have made it available to owners of other devices to try out. If it doesn't work on your phone then please don't leave negative feedback, because it discourages those who have the real problem that this app fixes. Instead you can report your problem in the forum on our website (heleron.com), where we might be able to find a solution. There is also a beta version available.
You could also try the previous version of this app "Wifi Strongest Signal". Try disabling Bluetooth to see if it makes a difference.