tiergain
The stack framework for supplement stores in 2026
Supplements are the perfect stack framework category. Customers already think in stacks. The framework just gives their behavior a structure that compounds AOV.
48%
AOV lift from a full supplement stack framework
3.4x
LTV from stack buyers vs single-bottle buyers
$98
Target AOV from $54 baseline with full stack
Supplement customers already take 3-5 products daily. The stack framework turns that natural behavior into a structured offer that compounds AOV and LTV.
The hacks
Hero product: one core supplement, one clear health benefit
Pick your bestselling protein, multivitamin, or signature blend. One product, one clear health outcome. Everything else in the stack supports or complements this anchor.
Entry incentive: free trial-size of the complementary product
Instead of "15% off your first bottle," offer "buy the protein, get a free trial-size BCAA." The trial costs you $4. The coupon costs you $5.10. And the trial introduces the second SKU in the stack.
Goal ladder: escalating rewards per supplement added to stack
Buy 1: full price. Buy 2: 10% off + free shipping. Buy 3: 15% off + shipping + trial-size. Buy 4: 20% off + shipping + trial + exclusive blend. Tiergain stacks all reward types in progressive goal tiers.
Non-monetary bonus: exclusive formulation at the top tier
Top tier: an exclusive premium blend available only in the complete goal stack. The exclusive product cannot be purchased individually. This drives the stretch to the top tier.
Stack completion upsell in the cart
Cart has protein + creatine. "Complete your recovery stack - add BCAA for $26 (save 15%)." The stack completion logic makes the add feel like finishing a protocol, not impulse buying.
Post-purchase subscription from goal stack buyers
After buying the full goal stack: "Get this delivered monthly at 15% off." Supplement buyers who commit to a health goal are the highest-converting subscription candidates in e-commerce.
Supplements are the perfect stack framework product
Customers already stack. Products already complement each other. Volume rewards already match replenishment cycles. The framework does not change behavior - it structures existing behavior into higher AOV.