The majority of "custom" tunes out there, both OEM and aftermarket, are mostly or entirely based on your frame's kinematics, because they're usually generated with no knowledge of exactly who the end user is. They have to assume you're the average rider, of average strength, riding the average terrain, and that you're of average weight, with average preferences, or preferences that happen to align with the team who developed the tune, even if they have unusual preferences themselves. By contrast, the Vorsprung Tuning Hub generates spring rate recommendations, as well as damper tune specifications and recommended settings for the Telum according to every single unique bike/rider combination. It takes into account the objective factors, such as rider/bike weight and leverage rate curve, as well as subjective factors - such as your terrain type, how hard you ride, how strong you are, whether you're hitting big jumps, and simply whether you prefer a softer or firmer setup. We also encourage you to upload a short video (a 10 second Iphone clip is fine) as that helps us gauge your riding and terrain a lot better than text.