NutriStack vs StackDay

NutriStack is a supplement tracker and interaction checker built on real evidence. Add your supplements and medications and instantly see where they interact, where they work in synergy, and how strong the research behind each one really is. It is the safety check most supplement apps leave out. CHECK FOR INTERACTIONS See potential interactions between your supplements and your medications, with clear explanations and what to do about them. This is NutriStack's core. Most apps log your pills; few tell you whether they belong together. SCAN AND GRADE (NEW) Scan a large new database of supplements and get an instant grade based on quality and the evidence behind each product, so you can tell a genuinely good formula from good marketing. ASK THE AI (NEW) A built-in AI that answers your questions from NutriStack's own research and interaction database, not the open internet. Ask about timing, combinations, or what the evidence says and get an answer grounded in the app's own data. BACKED BY RESEARCH Thousands of supplements and studies with real citations and evidence grades, so every claim is something you can check for yourself. This update adds more studies and broader interaction coverage. TRACK WHAT MATTERS Log doses and timing, keep your daily routine on track, and see your whole stack at a glance with a stack quality score. WHO IT IS FOR Anyone taking more than a couple of supplements, from beginners who just want to stay safe to enthusiasts optimizing a complex stack. NUTRISTACK PRO SUBSCRIPTION NutriStack Pro is an auto-renewing subscription that unlocks the in-app AI advisor. - NutriStack Pro Monthly: $6.99 USD per month - NutriStack Pro Yearly: $49.99 USD per year Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the same price. You can manage or cancel your subscription in your Apple ID account settings after purchase. Any unused portion of a free trial period, if offered, is forfeited when you purchase a subscription. NutriStack is for education and information only and is not a substitute for professional medical advice. Always talk to your doctor or pharmacist before changing your supplements or medications. Terms of Use (EULA): https://nutristackapp.com/terms Privacy Policy: https://nutristackapp.com/privacy

StackDay is the supplement and peptide tracker that finally makes you consistent — check off doses in one tap, watch your streak grow, and see which stacks actually work. NEW: PEPTIDES + PROTOCOLS A dedicated Peptides tab for BPC-157, TB-500, semaglutide, retatrutide, and every peptide in between. • Vial tracking with a 28-day reconstitution countdown • Titration schedules that auto-step your dose week by week for GLP-1s • Active-level curves (Pro) — see estimated compound levels between doses so you know when the next one is really due RECONSTITUTION CALCULATOR Enter your vial strength and BAC water; get exact U-100 syringe units instantly. Reverse mode lets you dial a target dose and see the water to add — no more scribbling on the back of a bottle. INJECTION SITE ROTATION A tappable body map covering all 8 subQ sites. Auto-suggests the most-rested spot every time you log a dose, so you never accidentally double up. DAILY CHECKLIST Your entire stack in one screen, split by morning, meal, afternoon, pre-workout, evening, and bedtime. Tap to check off each supplement. Satisfying haptics every time. 1,000+ SUPPLEMENT LIBRARY Vitamins, minerals, adaptogens, nootropics, mushrooms, and performance compounds — all pre-loaded with common dosages and units. Add your full stack in 30 seconds. Scan any label with your camera (Pro). STREAKS, QUESTS, AND BADGES • 24 illustrated achievement badges spanning streaks, logging milestones, peptides, and exploration • 3 weekly quests that rotate on a fresh cycle every week • Streak Freezes bank automatically at milestones and protect a missed day — because life happens INTERACTIVE WIDGETS • Medium Home Screen widget with tap-to-check-off buttons — mark doses without opening the app • Small widget and Lock Screen widgets for at-a-glance progress • Peptide widget showing your next dose and vial countdown • Mark doses taken right from notifications INTERACTION AWARENESS 16 built-in interaction checks (calcium and iron, coffee and ashwagandha, and more). Timing suggestions space competing supplements hours apart so absorption doesn't fight itself. PROGRESS THAT MEANS SOMETHING • 30-day adherence per supplement — see your true best performers • Monthly heatmap calendar • Wellness correlation (Pro) — spot which supplements actually move your mood, energy, sleep, and focus • Apple Health integration for sleep, steps, and workouts STACKDAY PRO • Unlimited history and full per-supplement stats • Active-level curves for peptides • Custom reminder times for every one of the 8 slots • Label scanner and AI Supplement Advisor • Wellness correlation insights and weekly recaps Free tier includes full daily tracking, 7-day history, slot reminders, and the reconstitution calculator. NOW IN 6 LANGUAGES English, German, Spanish, French, Portuguese, and Japanese — with more on the way. PRIVATE BY DESIGN Your data stays on your iPhone. No account required. Everything is stored locally. Built for anyone who spends money on supplements and peptides but never sees the payoff because they can't stay consistent. Every dose logged. Every streak counted. Every stack proven. Privacy Policy: https://foggy-labs.github.io/privacy/stackday Terms of Use: https://foggy-labs.github.io/terms Support: https://foggy-labs.github.io/support