When connected to wo Wi-Fi hotspot, many a time you see sluggish speed and the most probably reason is the number of users on it and how much bandwidth is being consumed. Luckily for Android Phone users, Wi-Fi analyzer can suggest them which Hotspot to choose.
This app once installed on your mobile creates a stats graph for all the access point which helps you get an idea which hotspot is better for you. Once you find it all you need is connected to one of the access point and get best browsing experience. More about Wi-Fi Analyzer
Related : Find WIFI access points and hot spots around you on Google Maps or on the Move