A free program for Android, by CartaDev.

Are you looking for a reliable app to test your internet connection? You have found the right one! Wifi Speed Test is a handy tool that allows you to check the speed of both Wi-Fi and cellular data networks. It is designed to help you monitor the connection of both networks in real-time. This handy tool has been designed to be battery-friendly. You will get a detailed report regarding your internet connection.

The app also shows you the current internet speed in the status bar and notification area. It allows you to view your internet usage in the last 30 days.