# Ester: Dose & Lab Tracker — TRT, peptide & dose tracker

> TRT, peptide & dose tracker (iPhone/iPad app by Castaneda Networks LLC.)

- Source: https://appshunter.io/ios/app/ester-dose-and-lab-tracker/id6778684239 (this page in markdown: same URL + `.md`)
- Developer: [Castaneda Networks LLC](https://appshunter.io/developer/1887905253)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 18.0 · 3 MB
- Languages: American English
- Released: 2026-06-15
- Data updated: 2026-06-27
- User reviews in markdown: https://appshunter.io/ios/app/ester-dose-and-lab-tracker/id6778684239/reviews.md

## What is Ester?

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ester Pro | $29.99 | per year |
| Ester Pro | $4.99 | per month |



## Version history (last 1 release)

### 1.0 — 2026-06-15

No release notes.

## More apps by Castaneda Networks LLC

- [MusicYaa](https://appshunter.io/ios/app/musicyaa/id6761282004)

All apps by Castaneda Networks LLC: https://appshunter.io/developer/1887905253

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-27.*