A stylus and a pen that have a color sensor, letting you copy and store colors from the real world. Use the stylus on your computer or mobile device, or get the pen and use your colors on paper, thanks to its built-in CMYK ink cartridges.
The Jot Script’s tip is just 1.9mm in diameter, so using it is more akin to using a pencil than a stylus. It has an aluminum barrel and lasts up to two weeks on an AAA battery. Works with iPad 3+ and iPhone 5+ (requires Bluetooth 4.0).
With the help of its companion apps, the tStylus can copy and transfer drawings or images from one screen to another. Apparently the devices don’t need to be paired in any way, but the recipient has to be an iOS device.
Ti-Click pens have titanium bodies and interchangeable capacitive stylus tips. The Ti-Click PRO works with 45+ types of rollerball refills while the Ti-Click RTS works with 35+ Parker-style refills.
The iPen is the first active stylus specially made for the iPad. It has a complementary receiver which provides proximity sensing and palm rejection and allowing for very precise writing or drawing.