Not just a calculator
Why Dosi
Blood concentration curves. Pharmacokinetic modeling. A body map that remembers every site. This is what serious tracking looks like.
Smart Injection Site Rotation Tracker
Tap a spot on the 3D body map, enter your dose, hit log. Rotate sites intelligently. The app tracks where you've been so you never hit the same spot twice.
Reconstitution Calculator, Built In
Vial size, BAC water, desired dose — we output the exact syringe units to draw. Step-by-step guide included. Works for every lyophilized compound in the database.
AI-Powered Protocol Education
AI trained on 200+ items in the tracker library — half-lives, dosing windows, titration schedules, stacking considerations. No hedging. No generic disclaimers.
Complete Protocol Library
200+ items across 16 categories — weight management, wellness, longevity, recovery, and more. Every one with half-life data, dosing ranges, and protocol templates.
Estimated Blood Concentration Over Time
Every logged dose plotted against its half-life — watch each compound rise, peak, and clear, then overlay your whole stack to see how it all fits together over time.
Featured Stacks · Tap to Load
A few items, chosen for one goal. Load a named stack in one tap — Dosi sets the frequencies, reminders, and site rotation so you can start tracking day one.
SKIN & COLLAGEN
Anti-aging powerhouse — collagen synthesis, hair support, tissue repair, and inflammation reduction.
Load in Dosi →ANTI-AGING
Core longevity protocol — cellular energy, DNA repair support, and sirtuin activation.
Load in Dosi →HEALING & RECOVERY
Comprehensive tissue regeneration + broad anti-inflammatory action targeting gut and skin.
Load in Dosi →GUT HEALTH
Intestinal repair, barrier support, and tight-junction / permeability support.
Load in Dosi →+ 18 more named stacks — Sleep, Cognitive, TRT, Sexual Health, and more. See them all inside Dosi.
Dosi University
200+ items in the tracker library. What the internet claims vs. what the research actually says. We cut through the influencer noise and break it all down in plain English — for every item we track. Always free.
Everything Inside
Calculators, tracking, AI, inventory, sync — all built in. No subscriptions to other tools, no spreadsheets, no guessing.
Why not just a spreadsheet?
A notes app remembers text. A spreadsheet doesn't reconstitute anything. Dosi was built for exactly what you're doing.
“Finally an app that understands I'm managing multiple compounds. The PK curves alone are worth it.”
“I was recalculating reconstitution by hand every time. Dosi cuts that to five seconds.”
“The body map tracker made me genuinely more consistent with site rotation.”