It's meth, or methamphetamine. Marketed as desoxyn. It has more euphoric properties and thus tends to be more addictive. If obtained on the black market there is risks of purity and legitimacy. It could be cut with baby powder or other fillers, cut with or replaced with another drug, and there may be harmful chemicals leftover from the manufacturing process. Meth itself isn't more dangerous than Adderall or other amphetamines, just more addictive generally.
The risks in my mind are the shady people you'd have to deal with and the purity/legitimacy problem.
There used to be some programs that ripped directly from Spotify API. Did those all go the way of the dinosaur?