Your HRT tracker shouldn't be abandoned or platform-locked.
You deserve better than what's left.
Private hormone tracking that works on every device. Real pharmacokinetic modeling for every route — injections, patches, sublingual, oral. No account walls. No gendered assumptions. Your protocol, your data.
The problem
The app you relied on got abandoned. Again.
The best HRT apps haven't been updated in years. Others only run on one platform. The apps that do exist assume everyone is on the same protocol. You've been tracking your levels in a notes app, guessing at trough timing, and hoping your data doesn't disappear when the next indie dev burns out.
What HRT users get
Built around your protocol.
Privacy as a feature, not a checkbox
All data stays on your device. No account required for any feature. No analytics on your health data. Biometric lock keeps your protocol private from anyone who picks up your phone.
Local encrypted database · No sign-up · Face ID / Touch ID · No data harvesting
iOS and Android from day one
Not iOS-only. Not a web app pretending to be native. Doseline ships on both platforms at launch, with the same features on both.
Full feature parity · Native performance · Offline-first
Pharmacokinetic modeling for every route
Injections, patches, sublingual, oral — each route has different absorption and half-life characteristics. Doseline models them all, showing your estimated serum levels between doses.
EV · EC · EB · Patches · Sublingual E2 · Oral E2 · Progesterone
Smart reminders that know your schedule
Patch change days. Injection schedules. Sublingual timing. Doseline reminds you based on your actual protocol, not a generic alarm.
Per-medication reminders · Flexible scheduling · Snooze without losing context
Bloodwork tracking with context
Log your labs and see them plotted against ranges that account for what you're taking and where you are in your cycle. Trough timing matters — Doseline helps you get it right.
E2 · T · SHBG · Prolactin · Progesterone · Custom markers
Free tools for HRT
Try these tools — filtered for your community.
Switching from something else?
If you're coming from a platform-limited app or tracking in a notes app, here's why people are switching.
Privacy
Your health data is deeply personal. We built for that.
Hormone tracking data is sensitive — full stop. Doseline was designed from the ground up so that your injection history, bloodwork, and medication data never leave your device unless you explicitly choose to sync. No account walls. No cloud by default. No exceptions.
No account required
Every feature works without signing up.
No cloud by default
Sync is opt-in. Data starts and stays on-device.
End-to-end encrypted sync
Even with sync, we can't read your data.
Biometric lock
Face ID, Touch ID, or fingerprint.
Ready to simplify your HRT protocol?
Join the waitlist. Free tier included, no credit card, your data stays on your device.
Available soon on iOS and Android.