Ester: Dose & Lab Tracker

Track your protocol. Keep the receipts. Every feature included - start with 7 days free.

Ester is a private tracker for physician-prescribed hormone and peptide therapy - TRT, GLP-1 medications, and other injectable or oral treatments. Log doses in two taps, see estimated medication levels, keep your lab work in context, and watch your real progress.

START WITH 7 DAYS FREE Every feature is included with an Ester Pro subscription, and new subscribers get a 7-day free trial.

EVERYTHING STAYS ON YOUR DEVICE No account. No server. No analytics. Your data never leaves your phone - we could not hand it over if we wanted to. Lock the app with Face ID and choose a discreet home-screen icon.

LOG IN TWO TAPS A daily checklist with reminders, streaks, and injection-site rotation history. Vial inventory tracks what you have on hand, how much is left, and when you'll run out.

ESTIMATED LEVELS A levels chart estimates active medication from the doses you log, using published half-life values. Solid past, projected future, a steady-state badge - and a washout view when a treatment period ends.

LABS IN CONTEXT Record blood panels with editable reference ranges. Trends show every marker against your treatment timeline, and values outside your reference range are flagged.

RECEIPTS FOR YOUR PROTOCOL Report cards summarize each treatment period: weight, body composition, strength, lab changes, and adherence. Compare periods side by side and share progress cards with medication names hidden by default.

ESTER NEVER GIVES ADVICE Ester tracks and visualizes data you enter. It does not recommend medications, doses, or schedules, and it is not a substitute for medical care. Always consult your physician.

Ester requires an auto-renewing Ester Pro subscription ($4.99/month or $29.99/year). New subscribers get a 7-day free trial. Subscriptions renew unless cancelled in your App Store settings. Your data stays on your device even if your subscription ends. Terms: https://castanedanetworks.com/ester/terms Privacy: https://castanedanetworks.com/ester/privacy