iSense was developed by Crabapple Inc. and released for sale in 2013. The product is an evolution in the design of the iDod music player's where the system is fully integrated into the user's body. Like the previous iterations of the iDod, iSense runs on Crabapple's LOS software and functions as a media hub that can play music, videos, and photos. The system is viewed on a hud overlay over the retina of the user and is powered via rechargeable batteries using nanotechnology and mechanical movement, the system can be updated via bluetooth or usb 4.0 depending on the users choice at time of installation.

Initial models only contained the iSense feature that played music according to the users biorhythms and subsequent models of the iSense player came with increased storage and the ability to play videos and personal playlists via the retina overlay which is a contact lens over the users eye.


The iSense was developed at Crabapple Inc. by a team of the world's leading engineers and doctors. Such as cardiologists, neurologists, and endocrinologists. Howard Pope, the world's leading cardiologist, Sara Mercer, the world's leading neurologist, and Javier Jacquez, the world's leading endocrinologist joined Crabapple's iSense research team of engineers as early as 2000. Initial release was slated for 2011, eventually pushed back to 2013.


The iSense feature monitors the heart rate, brain activity, and hormone levels to determine a playlist to play which is delivered through the sound system installed into the users ear canal directly via nanotechnology and if the user wishes for a different song to play they merely need to switch to the normal iJunes format of music shown on the hud overlay on the users retina. The thumb and index on both hands are outfitted with sensors to manually browse through music and selections determined by the user..

A secondary feature of iSense is to function as an alert to the nearest hospital in case of emergency. Since the feature closely monitors many critical functions of the body any abnormal variance can be sent to the users physician or nearest hospital.

Data Storage

Currently, the base version of the iSense comes with 16 gb of data storage. This data storage cannot be upgraded unless surguries are performed on the user. Other models of the iSense media player come with upgraded versions of data storage. Such as ranging from: 32, 64, 128, 256 gb of data storage. The subsequent models were offered 2014, and later 2015.


The iSense media player is updated and linked through a USB 4.0 port from an orifice of the users choosing although most base versions recommend the wrist as an outlet, and subsequent models come with the ability to update via bluetooth and wifi.

The system is charged using the users movement and nanomachines that directly charged the iSense batteries using the users' bioactivity.


The original iSense model surgically implanted a sound system into the users ear canal to directly input sound. Later upgrades to this were made when the retina hud display was made for subsequent models. These models required the users to undergo further surgery to implant sensors into the users thumbs and index fingers to allow connectivity through the retina display.


With the release of iSense, Crabapple Inc. dominated the market for user integrated music players and reported sales of 130 billion USD in the first quarter of 2013 alone. Since then, Crabapple Inc. has dominated the tech industry and seen growth in every quarter for the last decade.