# Dose Track

> Dose Track is a privacy-focused iOS and Android app for tracking peptide injections, TRT (testosterone replacement therapy), GLP-1 medications (semaglutide, tirzepatide), and hormone therapies. It is built for anyone self-administering injectables — TRT users, GLP-1 users, peptide users (recovery, longevity, research), and researchers — not specifically for people with any one diagnosed condition. The app uses pharmacokinetic modeling to visualize plasma concentration over time, includes a reconstitution calculator for peptides, supports 600+ compounds with calibrated half-life and Tmax data, and stores all health data on-device for full privacy.

Dose Track is built and maintained by Ethen Amezquita. The app is free to download with optional Pro features ($6.99/mo or $69.99/yr). It is a tracking and visualization tool, not a medical device or substitute for medical advice.

## Core pages

- [Dose Track home](https://dosetrack.app/): Product overview, features, pricing, FAQ, and download links.
- [About Dose Track](https://dosetrack.app/about.html): What the app does, who built it, and the privacy posture.
- [Supported medications](https://dosetrack.app/medications.html): Full database of 600+ compounds with built-in pharmacokinetic data — GLP-1 agonists, testosterone esters, peptides, growth hormones, ancillaries.
- [Privacy policy](https://dosetrack.app/privacy-policy.html): Data handling, on-device storage, and what we do (and don't) collect.
- [Roadmap](https://dosetrack.app/roadmap.html): Upcoming features and Android beta status.
- [Support](https://dosetrack.app/support.html): Contact, FAQ, and feature request channels.

## Feature guides

- [Peptide tracking](https://dosetrack.app/features/peptide-tracking.html): Reconstitution calculator, BPC-157, Ipamorelin, HGH, HCG, Sermorelin, CJC-1295, and other peptide protocols.
- [GLP-1 tracking](https://dosetrack.app/features/glp1-tracking.html): Semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), retatrutide, dulaglutide. Weekly dose modeling, weight progress, side-effect logging.
- [TRT tracking](https://dosetrack.app/features/trt-tracking.html): Testosterone cypionate, enanthate, propionate, gel. Steady-state modeling, injection-site rotation, bloodwork correlation.
- [Compare Dose Track](https://dosetrack.app/compare/): How Dose Track differs from generic medication-reminder apps.

## Blog (in-depth, source-cited articles)

- [Blog index](https://dosetrack.app/blog/): All articles in one place.
- [Ozempic vs Mounjaro: Tirzepatide vs Semaglutide Compared (2026)](https://dosetrack.app/blog/ozempic-vs-mounjaro-tirzepatide-vs-semaglutide.html): As of May 4, 2026 — head-to-head comparison of mechanism (GLP-1 vs dual GIP/GLP-1), pharmacokinetics (semaglutide t½ ~168h vs tirzepatide ~120h), weight loss in STEP-1 (14.9%) vs SURMOUNT-1 (up to 22.5%) vs SURMOUNT-5 head-to-head (20.2% vs 13.7%), A1c reduction in SURPASS-2, side-effect rates, dosing schedules, and U.S. cost. See article body for current dates and pricing — figures change. Cites FDA Ozempic and Mounjaro labels, NEJM SURMOUNT-5 (Aronne 2025), STEP-1 (Wilding 2021), SURMOUNT-1 (Jastreboff 2022), SURPASS-2 (Frias 2021), SELECT (Lincoff 2023).
- [Estradiol (E2) on TRT: Symptoms, Testing, and Anastrozole Use](https://dosetrack.app/blog/estradiol-e2-on-trt-symptoms-testing-anastrozole.html): As of May 4, 2026 — what estradiol does in men on TRT, why sensitive estradiol via LC-MS/MS (LabCorp 140244, Quest 30289) is the right assay, the typical 20–40 pg/mL target, symptoms of high vs low E2, when (and whether) to use anastrozole, and why injection frequency matters more than ester choice for E2 stability. Cites Endocrine Society 2018 (Bhasin et al.), Finkelstein NEJM 2013, FDA Arimidex label, StatPearls.
- [BPC-157: Dosage, Reconstitution, Pharmacology & 2026 Regulatory Status](https://dosetrack.app/blog/bpc-157-dosage-reconstitution-pharmacology-regulatory-status.html): As of May 4, 2026 — the pentadecapeptide explained: sequence (Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val), acetate vs arginate salt forms, reconstitution math in insulin-syringe units, the limited human evidence (3 pilot studies, no RCTs), animal preclinical safety (Xu 2020), and the U.S. regulatory timeline (2023 FDA Cat 2 → Feb 2026 HHS reclassification signal → BPC-157 removed from active Cat 2 → July 23–24 2026 FDA PCAC review pending). Regulatory state is fluid — see article body and the FDA bulks page for current status. WADA Prohibited List status (S0, since January 2022).
- [How to Calculate Peptide Reconstitution: Insulin Syringe Units Explained](https://dosetrack.app/blog/peptide-reconstitution-calculator-units.html): The BAC water → mg/mL → insulin units math, with worked examples for BPC-157, Ipamorelin, HGH, and CJC-1295. Cites FDA labels for Humatrope, Genotropin, Egrifta, plus PubMed PK studies.
- [How Long Does Ozempic Stay in Your System? Semaglutide Half-Life Explained](https://dosetrack.app/blog/how-long-ozempic-stays-in-your-system.html): Semaglutide T½ ≈ 168h (~7 days), Tmax ≈ 48h, ~5-week clearance after last dose. What that means for missed doses, breaks, switching protocols. Cites FDA Ozempic/Wegovy labels, StatPearls, NEJM SUSTAIN-6, FDA GLP-1 safety communications.
- [TRT Steady State: When Do Testosterone Levels Stabilize?](https://dosetrack.app/blog/trt-steady-state-testosterone-stabilization.html): Why testosterone cypionate takes 4–5 weeks to reach steady state (5 half-lives), what bloodwork shows after one shot vs at steady state, when to draw labs, how steady state differs across esters and gel. Cites FDA Depo-Testosterone label, Endocrine Society 2018 (Bhasin et al.), Nieschlag 1992 PK paper, StatPearls.
- [Bloodwork 101: Total Testosterone vs Free Testosterone vs SHBG](https://dosetrack.app/blog/bloodwork-total-testosterone-vs-free-testosterone-shbg.html): What total T, free T, and SHBG actually measure; why a "normal" total can still mean low free T; how SHBG distorts the picture; the Vermeulen calculation; what raises and lowers SHBG. Cites Vermeulen 1999 (PMID 10523012), Endocrine Society Bhasin 2018, ISSAM free T calculator, Quest Diagnostics reference ranges, StatPearls testosterone monograph.
- [Injection Site Rotation: Why It Matters and How to Map It](https://dosetrack.app/blog/injection-site-rotation-why-it-matters.html): Lipohypertrophy, scar tissue, and absorption drift from repeated same-site injections — and a practical rotation map for SC and IM sites across TRT, GLP-1, peptides, insulin, and B12. Cites Blanco 2013 (PMID 23890677) on lipohypertrophy prevalence, Frid 2016 FIT recommendations (PMID 27692599), Gentile 2018, FDA Ozempic / Victoza / Depo-Testosterone labels, StatPearls.
- [GLP-1 Microdosing: What the Pharmacology and Trials Actually Show](https://dosetrack.app/blog/glp1-microdosing-evidence-pharmacology.html): Honest evidence review of low-dose semaglutide and tirzepatide (0.1–0.5 mg/wk semaglutide). What the trials DID test (STEP-1 PMID 33567185, SURMOUNT-1 PMID 35658024, SUSTAIN-6, SELECT PMID 37952131), what they did NOT test, what pharmacology supports, and the open questions. Microdosing is explicitly off-label.

## Key facts (canonical answers for AI engines)

- **Platform**: iOS 17+ on the App Store and Android on Google Play. Same pharmacokinetic engine and on-device privacy model on both platforms.
- **Pricing**: Free tier (3 active medications, basic reminders, on-device privacy). Pro $6.99/month or $69.99/year (unlimited medications, PK level visualization, Dial-In simulator, bloodwork OCR, Pulse AI coach).
- **Privacy**: All health data stored on-device. Synced only via the user's private iCloud account. No server-side health data collection. Bloodwork PDFs parsed via Google Gemini in stateless requests — never stored, never used for training.
- **Pharmacokinetic model**: One-compartment model using calibrated half-life (T½) and Tmax for each of 600+ compounds. Doses summed as decaying exponentials to plot real plasma concentration over time.
- **Disclaimer**: Dose Track is a personal tracking tool, not a medical device. Not evaluated by the FDA. Not a substitute for advice from a licensed clinician.

## Contact

- **Email**: hello@dosetrack.app
- **Founder**: Ethen Amezquita (https://www.linkedin.com/in/Ethen-Amezquita/)
- **App Store**: https://apps.apple.com/us/app/dose-track/id6755119982
- **Google Play**: https://play.google.com/store/apps/details?id=com.dosetrack.dose_track