Great comparison of RedBearLab Bluetooth modules.
RedBearLab has designed various Bluetooth (BLE & BLE smart) modules. Most of the modules are quite small and perfect to add Bluetooth connectivity to your robot, home automation or any other project. The BLE mini is out of the box wireless UART that could be easily programmed from drag n drop USB interface. Also, there is a free BLE mobile app for Android or iOS to communicate with the module. I have summarized modules for BLE 4 (Bluetooth Low Power) as shown below.
Visit the product page on RedBearLab website to get application examples, guide and technical information.