JackedPack

What's in the box: A pack of supplement samples from various brands, chosen based on your stated fitness goals and flavor preferences.

JackedPack is a US subscription service built around supplement samples rather than full-size tubs. The idea is simple: instead of paying for a large container of a protein or pre-workout you may not like, you get a pack of smaller samples from various brands and try them first. Signup follows four steps. You pick a pack that matches your goals, fill out a profile with your goals and preferred flavors, and JackedPack uses that information to customize what it sends. Shipping is listed as free. After trying the samples, subscribers are encouraged to write reviews, which enters them for a chance to win a $100 Amazon gift card. That feedback loop is a nice touch, though it is a contest, not a guaranteed reward. The homepage does not spell out pack tiers, sample counts, or a list of brands, so it is hard to know exactly what you will get before signing up. Samples are, by definition, smaller than retail sizes, so the box suits discovery more than restocking your shelf. If you cycle through supplements and like testing flavors and formulas before committing, JackedPack is a reasonable, low-commitment way to do it. If you already know your preferred products, it offers less value.