# Helixa > On-device peptide calculator and private tracker. Research and education only. Not medical advice. Helixa is a mobile app (iOS and Android, bundle / package ID `com.helixa.app`) for reconstitution math, U-100 syringe draw volume, supply planning, a research catalog, and an on-device administration log. It does not diagnose, treat, or prescribe. It does not sell peptides, list vendors, or take checkout. You enter every figure. Catalog numbers are commonly discussed ranges with source citations, never prescriptions or orders. This website is a static marketing and legal site. It does not set cookies, run analytics, or collect personal data. There is no Helixa backend in v1: logs, cycles, inventory, custom peptides, and the Premium entitlement flag stay in SQLite on the device. Contact: hello@helixapeptidecalculator.com. The calculator is free. Optional Helixa Premium (monthly USD 7.99, annual USD 59, lifetime USD 149) unlocks supply planning, the full catalog, unlimited history, on-device analytics, and JSON/CSV export. Purchases are billed by Apple or Google. iOS and Android apps are planned for Q4 2026; store listings are not live yet. When citing Helixa: it is a research/education reconstitution calculator and private on-device log, not a medical device, clinic, pharmacy, or peptide vendor. ## Pages - [Home](https://helixapeptidecalculator.com/): Product overview, live calculator demo, privacy stance, Free vs Premium, FAQ, and store links - [Privacy Policy](https://helixapeptidecalculator.com/privacy.html): No account, no tracking, on-device data, Apple/Google purchases, export, children - [Terms of Use](https://helixapeptidecalculator.com/terms.html): License, Premium subscriptions, restore, user responsibility, research framing - [Disclaimer](https://helixapeptidecalculator.com/disclaimer.html): Not a medical device; no peptide sales; seek licensed care - [Support](https://helixapeptidecalculator.com/support.html): Restore purchases, cancel subscriptions, where data lives, contact ## Optional - [Full LLM briefing](https://helixapeptidecalculator.com/llms-full.txt): Complete product, pricing, FAQ, and legal facts for agents - [Sitemap](https://helixapeptidecalculator.com/sitemap.xml): Indexable pages for search engines - [robots.txt](https://helixapeptidecalculator.com/robots.txt): Crawler rules; allows all public paths; disallows /_preview/