This is a full version of Internet Speed Meter & has the following additional features;
- Themes support
- Quick analysis of data usage with gradient theme feature
- Option to choose blue status bar icon

The app has a smart notification system that automatically shows up the notification when you connect to internet and hides when it is disconnected.
The app is light on resources and battery efficient.

Features:
Real time speed update in status bar and notification.
Daily stats in notification.
Smart Notification On/Off.
Separate stats for Mobile data and WiFi data.
Logs your data traffic of last 30 days.

What's in this version: (Updated : Oct 8, 2013)
Added option to change notification layout and priority.
Added option to hide notification when connection is idle.
Added option to show upload and download speed in separate notifications.
Required Android O/S : 2.3.3+

Screenshots: