51 people built their stack in the last 24 hours · Free plan, no card needed
Most supplement stacks
cancel each other out.
You're probably wasting money on supplements that block each other. Our engine cross-references 73 synergy rules and 32 conflict warnings to fix your stack instantly.
No nutritionist. No guesswork. Just science.
No credit card · Free plan forever · Cancel paid plans anytime
Vitamin D3 + K2 helps direct calcium where it belongs.
Calcium can compete with iron and zinc. Separate them when building a full stack.
From confusion to clarity
in three steps
No nutritionist needed. Our engine cross-references every supplement against 100+ peer-reviewed rules.
Set your goals
Choose from 11 goal categories — strength, fat loss, sleep, focus, gut health, and more.
Build your stack
Select from 139 supplements. Instant synergy, conflict, and smart suggestion analysis as you go.
Get your plan
Full timing guide, shopping list, and (Elite) a complete 5-meal diet plan built around your stack.
Save & iterate
Save unlimited named stacks to your dashboard, accessible from any device, anytime.
Everything you need to
stack smarter
Instant synergy analysis
73 proven synergy combinations — Vitamin D + K2, Magnesium + Zinc, and dozens more flagged in real time.
Conflict & safety warnings
32 conflict rules flag dangerous combinations. Severity-coded: high, moderate, and low risk.
Goal-based recommendations
11 goal maps auto-build a starting stack for your objectives in one click.
Supplement timing guide
Know exactly when to take each supplement for optimal absorption — morning, pre-workout, with food.
Diet plans (Elite)
11 complete 5-meal plans with macros, supplement-meal timing, and vegan/veg adaptations.
Smart shopping list
One-click shopping list with iHerb and Amazon links for every supplement in your stack.
Real results from real stacks
“I had no idea Zinc and Copper were competing for absorption. Fixed my stack in 5 minutes and actually started seeing results. This should be illegal it's so useful.”
“I recommend this to every client now. The conflict warnings alone are worth the subscription — I've caught dangerous combinations people had been taking for months.”
“The timing guide is what sold me. Taking D3 + K2 together and magnesium at night actually made a noticeable difference to my sleep within a week. Pro is a no-brainer at £4.90.”
Start free. Upgrade when ready.
No contracts. No hidden fees. Cancel anytime. All prices in GBP.
Perfect for exploring your supplement stack.
Get started free- ✓40 supplements (of 139)
- ✓Up to 5 per analysis
- ✓Goal recommendations
- ✓Synergies & conflicts
- 🔒Timing guide
- 🔒Save stacks
- 🔒Diet plans
For serious supplement users who want the full database.
- ✓All 139 supplements
- ✓Unlimited analysis
- ✓Timing guide
- ✓Save unlimited stacks
- ✓Shopping list
- 🔒Diet plans (Elite only)
Everything in Pro, plus complete diet plans built around your stack.
- ✓11 complete diet plans
- ✓5-meal plans with macros
- ✓Supplement-meal timing
- ✓Vegan/veg substitutions
- ✓Early feature access
- ✓Priority support
Stop guessing.
Start stacking smarter.
Join 4,000+ people who've already optimised their supplement routine. Takes 2 minutes.
51 people signed up today
No credit card · Cancel anytime · Free plan forever