Ester Ester

Your protocol, connected to your results.

Log every dose. Watch your vials, bloodwork and body move together — all in one place. 100% on-device. No account, no cloud.

Download on the App Store See how it works
Private by default No account iPhone
Ester — Today
Dose, vial, lab
one connected log
100% on-device
nothing leaves your phone
No account
open it and go
Everything in one place

Five screens that keep your protocol honest.

01 · Today

One tap to log the dose.

See what's due, mark it done, and keep your streak going. Your next scheduled dose is always one glance away — no spreadsheet, no guesswork.

Daily checklist with one-tap logging
Streaks and your next scheduled dose
Supply levels right on the home screen
Ester — Today screen
Ester — Vials screen
02 · Vials

Always know what's left.

Track remaining volume for every vial, doses left in your inventory, and an estimated clearance date. Ester does the mL math so you reorder before you run out.

Per-vial volume and concentration
Doses left, estimated from your log
Est. run-out date, e.g. "runs out ~Jul 5"
03 · Bloodwork

Watch your markers move.

Log lab panels and chart any marker against your own reference ranges. Values outside the range are flagged — and every range stays editable. Trends show your logged values only.

Trend any marker over time
Your own, editable reference ranges
Flags values outside the range
Ester — Bloodwork screen
Ester — Progress screen
04 · Progress

The trend, not just today.

Weight, body-fat and progress photos over weeks and months — so the work actually shows up in the line, not just the daily number.

Weight and body-fat trend lines
Progress photos and PRs in one place
D / W / M / 6M / Y ranges
Built around the work

For people who take it seriously.

Ester keeps the record so you can stay focused on the work — every dose, lab and lift accounted for.

Athlete resting between sets in the gym
Consistency, logged.
Show up. Mark it done. Watch the streak hold.
Athlete training on a cable machine
Results, connected.
The numbers and the mirror, finally in one timeline.
Private by design

Your health data never leaves your iPhone.

On-device only
Your log lives on your phone. No account to create, nothing synced to a server we control.
You own it
Export everything or delete it for good, whenever you want. It's your record, not ours.
No ads, no tracking
Ester never sells or shares your health data. There's nothing to sell — it isn't ours to see.
Ester

Launching this week on the App Store.

Set up your protocol in minutes. Everything stays on your iPhone — no account, no cloud.

Download on the App Store