Evidence-based formulation
Build a clinically dosed pre-workout from what's already in your kitchen.
Pay for ingredients, not marketing. Calculate caffeine by bodyweight, stack proven add-ons at effective doses, and skip the proprietary blends. Everything runs locally on your device.
Dose by bodyweight
3–6 mg/kg caffeine targets with a 400 mg hard cap, plus clinical ranges for citrulline, sodium, carbs and more.
Examine-style ratings
★★★★★ Excellent, ★★★★☆ Good, ★★★☆☆ Emerging. We separate acute ingredients from saturation ones.
Compare to commercial
See your formula side-by-side with C4, Woke AF and Pre JYM — caffeine, citrulline, creatine and cost.
Acute vs saturation
Caffeine, citrulline and sodium work the day you take them. Creatine and beta-alanine require daily use to raise tissue stores — adding them to a single drink will not boost today's session.
Read the scienceDIY vs commercial
A clinically dosed DIY serving costs roughly $1.10–$1.20 — at full effective doses for every ingredient. C4 and friends often underdose the expensive stuff.
See the comparison