Stack
Log a dose in one tap.
Every dose, supplement and schedule in one list. Doses left, run-out date and next injection site are kept for you.
Next dose Sat 8:00 · 3 doses left
For adults who manage their own protocol
Your doses, meals, sessions and blood tests on one timeline.
Vantal logs your stack, food and training, estimates your level between blood tests, and plots every result against what you were taking at the time. No ads, no trackers.
Free for the first 50 people. Then $39.99 a year or $9.99 a month. Runs in your browser today; you sign up with an email.
189 lab markers · 316 exercises · Lift, run, ride, swim or row · No ads or trackers
How it works
One log for what you take, what you do and what it shows.
Your doses are in a notes app. Your meals are in a food app, your sessions in a lifting app, and your blood tests in a folder of PDFs. Vantal keeps them in one log.
- Add what you take and when. Vantal builds the schedule and counts your supply.
- Log doses, meals and sessions as they happen. A scheduled dose is one tap.
- Add a blood test when you have one. The estimate rescales and the result lands on the same timeline.
What you take
Levels
See roughly where your level is today.
An estimate from the published half-life, redrawn each time you log and drawn with a band.
Day 5 of 7 · about three-quarters of peak
What you do
Food
Eat to your 7-day trend.
A diary, recipes, meal plans and a shopping list. Targets follow your weight trend and hold for two weeks after a dose change.
Trend −0.6 kg/wk · target stays 2,100 kcal
Training
Get the next weight on the bar.
316 exercises, programmes, plates and PRs. Lift, run, ride, swim or row. It suggests a weight. It never suggests a dose.
Squat 100 kg × 8, 8, 8 → 102.5 kg today
Events
Plan back from race day.
Phases, a taper, race-day fuel and recovery, worked back from the date.
Half marathon 14 Mar · taper from 28 Feb
What it shows
Labs
Read each result against what you were taking.
189 markers on the same timeline as your doses, each with its reference range where one is defined.
HbA1c 5.4% · drawn in week 6, on dose step 2
Progress
See weight by dose step, strength by dose day.
Trend weight, body fat, waist, photos, check-ins and side effects in one view.
Step 1: −0.4 kg/wk · Step 2: −0.6 kg/wk
Figures on this page are example data.
How the estimates work
This curve is wrong. Here's by how much.
Level curves come from a published half-life, calorie targets from a formula, and one-rep maxes from your last heavy set. Those are averages, and you may run faster or slower. So every estimate is labelled as one, every curve has a band, and the formulas are in the app.
- ✓No half-life, no curve. If none has been published, Vantal shows your dose marks and nothing else.
- ✓A blood test rescales it. Link a real result and the curve is scaled to match.
- ✓Vantal never suggests a dose. It shows where you probably are. What to do about it is for you and your clinician.
Estimated levellast 8 weeks
Reports
Take it to your appointment.
Your doses, labs and changes for any date range, as one PDF. Vantal is a log. What to do about it is for you and your clinician.
Privacy
We keep a copy of your log. Here is what that means.
No ads. No analytics. No trackers. Your log is never sold or shared.
On your device first
The app reads and writes your log on your device, so after your first sign-in it opens and logs offline.
A synced copy, so you can get it back
Sign in on a new phone and your log returns. To do that we hold a copy and the key to it, which means we could technically read it. It is not sold, shared or used for advertising. Lab report files and progress photos stay on the device.
AI only when you ask
Scan a lab report or ask a question and that one item is sent, with your consent. Data from Apple Health or Health Connect is never sent to AI.
Price
Free for the first 50 people.
After that, one of three prices. No ads and no trial tricks. Nobody is charged yet, because payment is not switched on.
Yearly
$39.99
About $3.33 a month.
Monthly
$9.99
Billed each month.
Weekly
$4.99
Billed each week.
FAQ
Questions
Who is it for?
Adults who manage their own protocol: people on a GLP-1 or testosterone, people who take peptides or supplements on a schedule, and people who train seriously and want their food, lifting and blood tests in the same place.
Do I have to use all of it?
No. Start with doses alone, food alone or training alone. The rest stays out of the way until you log something in it.
Do I need an account?
Yes, an email and a password. The account is what brings your log back on a new phone.
Is this medical advice?
No. Vantal is a log, not a medical device. It does not diagnose or treat anything, and it never suggests a dose.
How accurate are the level curves?
Accurate enough to be useful, and no substitute for a blood test. They are built from published averages, which is why each one has a band and why a real result rescales it.
What works today?
The web app, in any modern browser. iPhone and Android apps are on the way.
What if I lose my phone?
Sign in on the new one and your log comes back. Lab report files and progress photos are not synced, so export the ones you want to keep.
How do I delete everything?
Settings, then Account, then Delete account. That removes your account and the synced copy, and clears the device.
Who makes Vantal?
Vantal (Pty) Ltd, a small independent company in South Africa. Write to hello@vantal.app.
Start with today's dose, today's lunch or today's session.
Open the web appFree for the first 50 people. Then $39.99 a year or $9.99 a month. Runs in your browser today; you sign up with an email.