Machaon
Supplement & Symptom Tracker
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Free
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About
Healstack is a personal substance tracker, harm reduction wiki, and health dashboard.
Log doses with a journal you can filter and search, browse a 200+ substance wiki with harm reduction data, and see your health trends in one dashboard. Your data stays in your account — no ads, no data sales.
FEATURES
- Dose logging with journal, filters, and search
- 200+ substance wiki with harm reduction information
- Health dashboard with trends over time
- Private by design
Healstack is built for harm reduction: honest information and personal tracking to help you make safer choices.
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What's New in Machaon
2.4.0
October 22, 2026
Healstack is now Machaon, named for the healer son of Asclepius. A new stethoscope icon and a cleaner look. The tab bar is the standard iOS one and no longer covers what you're reading. Your log now syncs with the web app on the same account.
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