The St. Jude Medical™ Patient Controller (PC) app was developed by St. Jude Medical (SJM) for chronic pain patients who are connected to SJM spinal cord stimulation devices. This app helps patients conveniently manage the programs prescribed by their physicians and communicates with the implanted/external device using Bluetooth wireless technology. The PC app runs on SJM recommended devices (as mentioned below) and is easy to use while the wireless interface brings more flexibility and comfort. Some of the key functionalities available for patients to use include: - Turn stimulation ON/OFF - Select appropriate programs - Adjust stimulation amplitude - Check device battery Recommended Devices: - iPod Touch 5th Generation running iOS 8.3 or later. - iPod Touch 6th Generation running iOS 10.0 or later. Note: - ***This Application will work on iPod Touch only.*** - iPod Touch is registered trademark of Apple, Inc. - Bluetooth is registered trademark of Bluetooth SIG.