For peptide, TRT & GLP-1 protocols

Every dose. Every vial.
Never run out.

Aion is the reliable iPhone tracker for self-directed protocols — dose logging, reconstitution math, titration schedules, and supply, all in one private app.

iPhone-native  ·  Private by design  ·  No account required

Aion's Today screen showing the next scheduled Tirzepatide dose, titration week 2 of 4, daily check-ins, and supply tracking
Reconstitution calculator

Math you can trust with a syringe.

Dial in your dose on a draggable tape, watch the syringe fill live, and get a plain-language draw instruction.

  • Blends done right. independent per-compound doses, never auto-equalized.
  • Water solver. pick the tick mark you want to land on; Aion solves the diluent.
  • Doses per vial, up front. how many doses this vial yields, before you commit to a concentration.
Aion's reconstitution calculator showing a draggable dose tape, live syringe, and draw-to units for a 250 mcg dose
Cycles & titration

Your whole protocol, on a calendar.

Titration ladders, loading phases, rest weeks — Aion resolves them day by day, so reminders and the calendar always reflect the week you're actually in.

  • Phase-aware reminders. next week's dose is next week's amount.
  • Logged, scheduled, missed. one month view of all of it.
  • Templates included. common titrations and stacks, editable to yours.
Aion's schedule calendar showing a full month of scheduled doses across August — daily BPC-157 and twice-weekly TB-500 alongside a weekly tirzepatide titration
Progress

Everything you tracked, in one place.

Weight, mood, energy, side effects and adherence, tracked together over whatever range you pick.

  • A clean day counts. "no side effects today" is a real entry, not a blank.
  • Adherence, honestly. scheduled versus logged, matched dose by dose.
  • Records you can hand over. a PDF for your provider — or JSON and CSV, because it's your data.
Aion's Progress tab showing weight, mood and energy, side effects, adherence, and progress photos with a range selector

Built to be boringly reliable.

The category's apps fail at saves and reminders. Aion treats both as launch-blocking engineering, not features.

Logs that never vanish

Every dose saves instantly and survives force-quits, reinstalls, and new phones.

Reminders that fire

Dose alerts, a missed-dose follow-up, and alerts that cancel themselves once you log.

Supply that counts itself

Doses left, days left, reorder alerts, and reconstitution expiry per vial.

Progress that means something

Weight, mood, energy, side effects, and adherence — plus a PDF your provider can read.

Private by design.

Aion is built for a category where privacy isn't a feature — it's a requirement.

  • No account. Nothing to sign up for.
  • Data lives on your iPhone and, if you choose, in your own private iCloud.
  • No servers of ours. No third-party analytics. Nothing to breach.
  • Export or delete everything, any time.

Quick answers.

Is Aion medical advice?

No. Aion is for personal record-keeping and educational reference only. You enter your own protocol; the app never recommends, prescribes, or advises. Always consult a qualified healthcare provider.

Where does my data live?

On your iPhone, and — if you turn on sync — in your own private iCloud. Aion has no servers and no third-party analytics.

Do I need an account?

No. Aion works the moment you open it. No signup, no email, no login.

Does it work offline?

Yes — everything works without a connection. Logging, the calculator, schedules, and reminders are all on-device.

What does Aion cost?

Free to start. Unlimited dose logging, reminders, the dose calculator and the water solver, one active protocol, two vials, and 30 days of history. Premium unlocks blends and saved presets, titrations and cycles, unlimited protocols and vials, full history and photos, supply alert notifications, and PDF and CSV export.

Aion is on the App Store.

iOS 17+ · Free to start · No account required

Download for iPhone