Inventory tracking
Group vials by peptide. Get alerts when supply runs low, vials are expiring, or already expired.
Coming soon to iOS & Android
Your peptide journey, on your phone — and only on your phone.
A local-only 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.
9:41
Wednesday
Today
This week
8
doses
3
peptides
5
vials
Inventory alerts 2
Peptide C · low supply 0.8 mg left
Peptide D · expiring Exp Mar 02
Recent doses Today Yesterday
Peptide A · 250 mcg
SubQ · 8:02 AM
Peptide B · 100 mcg
SubQ · 8:05 PM
Log dose
The privacy promise
Built so the only place your data lives is in your pocket.
Your data never leaves your phone — because there's no server to send it to. No accounts, no analytics, no third-party SDKs in the data path. The same rules apply to this site.
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. Move records between phones or back them up with JSON export and PDF journal export — both on the roadmap.
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.
-
Add a vial
Pick the peptide from the bundled catalog or define your own. Set vial dose and water volume; concentration is computed for you.
-
Reconstitute
Enter your target dose in mcg. See the volume to draw and the reading on a U-100 insulin syringe — live, while you type.
-
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.
-
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.
Reconstitution calculator
Enter vial size, water volume, and target dose. See concentration, draw volume, and units on a U-100 insulin syringe — live, while you type.
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.
Dose history
See every dose grouped by day, right from the dashboard. Tap any entry to edit or remove it.
Curated peptide catalog
26 peptides bundled: Healing, Growth Hormone, Weight Management, Cognitive, Immune, Sleep, Sexual Health, Skin/Tanning, Anti-Aging. Custom peptides too.
Native-feeling design
Dark by default with a respectful light theme. One app, both platforms.
Inventory
9:41
Inventory
3 peptides
Search peptides
Peptide A
Healing 3.6 / 5 mg active
Exp Apr 12
0.8 / 5 mg low
Exp May 03
Peptide B
Growth Hormone 4.2 / 5 mg active
Exp Jun 18
Peptide C
Cognitive 0 / 5 mg expired
Exp Mar 02
Reconstitution
9:41
Cancel
Add vial
SavePeptide
Peptide A
Vial size
5 mg
BAC water
2 mL
Target dose
250 mcg
Expiry
Apr 12, 2026
Live preview
Concentration 2,500 mcg/mL
Volume per dose 0.1 mL
Insulin syringe 10 units · U-100
Dose entry
9:41
Cancel
Log dose
Peptide
Peptide A
Vial
3.6 / 5 mg · exp Apr 12
Amount
250
mcg
Route
SubQ IM Oral Other
Taken at
Today, 8:02 AM
Notes
Add notes…
Log dose
History
9:41
Dose history
5 entries All Peptide A Peptide B Peptide C
Today · Wed
Peptide A · 250 mcg
SubQ · 8:02 AM
Peptide B · 100 mcg
SubQ · 8:00 PM
Yesterday · Tue
Peptide A · 250 mcg
SubQ · 8:14 AM
Peptide B · 100 mcg
SubQ · 8:05 PM
Peptide C · 5 mg
Oral · 6:30 PM
Reconstitution, without the mental math
Plug in three numbers. Get the answer in syringe units.
Enter vial dose (mg), water volume (mL), and target dose (mcg). See concentration, draw volume, and the U-100 reading — live, while you type.
5 mg vial + 2 mL bacteriostatic water + 250 mcg dose → 0.1 mL → 10 units on a U-100 syringe.
9:41
Cancel
Add vial
SavePeptide
Peptide A
Vial size
5 mg
BAC water
2 mL
Target dose
250 mcg
Expiry
Apr 12, 2026
Live preview
Concentration 2,500 mcg/mL
Volume per dose 0.1 mL
Insulin syringe 10 units · U-100
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.
Cycle planning
Plan upcoming cycles and track active ones.
Local push reminders
Reminders for doses and vial expiry, scheduled on-device.
Journal
Notes, photos, biomarkers, mood, and weight — with trend charts.
PDF journal export
Export your journal entries to a single PDF.
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?
In review with Apple now — we'll update this page the moment it ships.
How much does it cost?
Free.
Who builds it?
A small independent team at CustomApps.
Built privately, for adults on protocols
A tracker that respects the rules you set for yourself.
No accounts. No analytics. No cloud. When the app lands, you'll be the first to know — if you ask.
Opens your email app. Nothing to fill in — just hit send.