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The Peptide Tracker
Coming soon to iOS & Android

Your peptide journey, on your phone — and only on your phone.

A private, offline-first iOS & Android tracker for peptide inventory and dosing — with a built-in reconstitution calculator.

Not medical advice. The Peptide Tracker is a personal log and journal tool. It does not recommend protocols, dosages, or sources. Intended for adults already on protocols under their own care.

The privacy promise

Built so the only place your data lives is in your pocket.

We can't lose data we never collect. The Peptide Tracker has no servers, no analytics, no third-party SDKs in the data path — and this site doesn't either.

No account. No login.

Open the app and start tracking. We never ask you to sign up because we never need to know who you are.

No cloud sync. No backend.

Your data lives on your device, in an encrypted local database. It never touches our servers — because we don't have any.

No analytics. No tracking. No ads.

Zero third-party SDKs in the data path. The app — and this site — ship clean.

Works in airplane mode.

Full offline use, including the reconstitution calculator.

You own your data.

On-device only. JSON export/import and PDF journal export are on the roadmap so you can move or back up your records on your terms.

How it works

Four steps from vial to history.

The whole loop, with no account and no network call. Sized for a phone you're holding while you reconstitute.

  1. Add a vial

    Pick the peptide from the bundled catalog or define your own. Set mg and bacteriostatic water; concentration is computed for you.

  2. Reconstitute

    Enter your target dose in mcg. The app shows the volume to draw and the reading on a U-100 insulin syringe — live, while you type.

  3. Log a dose

    One modal from the dashboard or a vial card. Default unit and route are pre-filled; the linked vial's remaining mg decrements on save.

  4. Review history

    Recent activity grouped by day on the dashboard. Edit or delete, and the vial reconciles automatically.

What you get at launch

Everything you need on day one — nothing you don't.

At launch

Inventory tracking

Group vials by peptide. Get alerts when supply runs low, vials are expiring, or already expired.

At launch

Reconstitution calculator

Vial mg + bacteriostatic water mL + target dose mcg → concentration, volume, and units on a U-100 insulin syringe. Live preview while you add a vial.

At launch

Dose log

One-tap dose entry from the dashboard or a vial card. Defaults to the peptide's usual unit and route. Edit or delete later — the vial's remaining amount reconciles automatically.

At launch

Dose history

See every dose grouped by day, right from the dashboard. Tap any entry to edit or remove it.

At launch

Curated peptide catalog

26 peptides bundled, organized into 9 categories: Healing, Growth Hormone, Weight Management, Cognitive, Immune, Sleep, Sexual Health, Skin/Tanning, Anti-Aging. Add custom peptides too.

At launch

Native-feeling design

Dark by default with a respectful light theme. One app, both platforms.

Inventory grouped by peptide
Live reconstitution preview
Fast dose entry
History grouped by day

Reconstitution, without the mental math

Plug in three numbers. Get the answer in syringe units.

Tell it your vial size in milligrams, how much bacteriostatic water you're adding, and your target dose in micrograms. The app shows concentration, the volume to draw, and the reading on a U-100 insulin syringe — live, while you type.

Vial

5 mg

BAC water

2 mL

Target dose

250 mcg

Draws to

0.1 mL · 10 units on a U-100 syringe

Worked example, verbatim:
5 mg vial + 2 mL bacteriostatic water + 250 mcg dose → 0.1 mL → 10 units on a U-100 syringe.

Roadmap

On the post-launch list.

Not shipped yet — planned for the months following launch. Same privacy rules: on-device only, no telemetry, no exceptions.

Coming soon

Cycle planning

Plan upcoming cycles and track active ones.

Coming soon

Local push reminders

Reminders for doses and vial expiry, scheduled on-device.

Coming soon

Journal

Notes, photos, biomarkers, mood, and weight — with trend charts.

Coming soon

PDF journal export

Export your journal entries to a single PDF.

Coming soon

JSON backup / restore

Move your data between phones with full export/import.

FAQ

The questions we hear most.

Do I need an account?

No. Open the app and start.

Where is my data stored?

On your device, in an encrypted local database. Nothing is uploaded.

Does it work offline?

Yes — fully, including the calculator.

Can I move my data to a new phone?

Yes, via JSON export/import. (Coming soon — see the Roadmap section.)

Is this medical advice?

No. It's a personal log. See the disclaimer.

Does it tell me what to take?

No. It tracks what you choose to track.

iOS and Android?

Both, at launch.

When is launch?

Soon. Check back.

How much does it cost?

Free.

Who builds it?

A small independent team at CustomApps.