WiFi Picker shows nearby wireless hotspots and helps to connect them easily.
WiFi Picker(Scan Wifi) helps to find good APs and to connect them graphically.
1. Signal strengh
2. Channel number
3. Security type
4. Link speed
5. Hardware vendor
6. IP number, and etc.
You can see which one is good and bad intuitively, and it is very easy to use.
WiFi Picker also supports notification feature.