Log a dose in three taps
Pick the compound, confirm the amount, done. Your history builds itself as you go.
For GLP-1 and peptide protocols
Log doses. Calculate reconstitution. Report to your doctor.
Peptisy logs your doses, calculates vial concentration and units to draw, and builds a plain report you can bring to an appointment.
Today
Wednesday, Aug 12
This week
M
T
W
T
F
S
S
Last dose
Semaglutide, 0.4 mg
In the app
One app, four screens you actually use
Peptisy stays out of the way until you need it. Here is what each screen does.
Log a dose in three taps
Pick the compound, confirm the amount, done. Your history builds itself as you go.
Log a dose
Semaglutide
Amount 0.4 mg
Site Left thigh
Time 7:45 AM
Recent
- Mon0.4 mg
- Last Wed0.4 mg
- Last Mon0.25 mg
Draw the right amount
Enter vial strength and water added. Peptisy shows units to draw for your syringe.
Reconstitution
Vial5 mg
Water2 ml
Dose0.25 mg
Units to draw
10 units
10 of 100 units · U-100 syringe
Watch the trend, not just the number
Weight and dose history sit on one chart, so a pattern is visible before it is a problem.
Weight trend
Last 8 weeks
Start 214 lb
Now 198 lb
Change −16 lb
Dose days marked on the timeline below.
Bring a plain report to your appointment
One tap turns your dose history into a report your prescriber can read in a minute.
Doctor report
Jun 1 – Aug 11
Dose history summary
Semaglutide · 11 doses logged
Average interval: 7 days
Weight: 214 → 198 lb
Aug 50.4 mg
Jul 290.4 mg
Jul 220.4 mg
Draw the right amount
Enter vial strength and water added. Peptisy shows units to draw for your syringe.
Watch the trend, not just the number
Weight and dose history sit on one chart, so a pattern is visible before it is a problem.
Bring a plain report to your appointment
One tap turns your dose history into a report your prescriber can read in a minute.
Log a dose
Semaglutide
Amount 0.4 mg
Site Left thigh
Time 7:45 AM
Recent
- Mon0.4 mg
- Last Wed0.4 mg
- Last Mon0.25 mg
Reconstitution
Vial5 mg
Water2 ml
Dose0.25 mg
Units to draw
10 units
10 of 100 units · U-100 syringe
Weight trend
Last 8 weeks
Start 214 lb
Now 198 lb
Change −16 lb
Dose days marked on the timeline below.
Doctor report
Jun 1 – Aug 11
Dose history summary
Semaglutide · 11 doses logged
Average interval: 7 days
Weight: 214 → 198 lb
Aug 50.4 mg
Jul 290.4 mg
Jul 220.4 mg
What Peptisy does
Dose log
Log each dose in a few taps. History stays on your device and your own iCloud.
Reconstitution calculator
Enter a vial amount, water added, and dose to get concentration, volume, and units to draw.
Doctor report
Generate a plain report of your dose history to bring to an appointment.
Try it now
Free calculators
Use the same math the app uses, free, in your browser. No sign-in required.
No account. No cloud servers.
Peptisy has no backend for your data. Your dose log, vials, and reports stay on your device and sync only through your own iCloud, if you turn that on.
Frequently asked questions
Does Peptisy need an account?
No. Peptisy does not require an account or sign-in.
Where is my data stored?
On your device and, if you enable it, your own iCloud private database. Peptisy has no server that stores your data.
Does Peptisy give medical advice?
No. Peptisy performs arithmetic on the numbers you enter. It does not recommend, adjust, or suggest a dose. Talk to your prescriber about your protocol.
Is Peptisy free?
The calculators on this site are free to use. The app includes a subscription for dose logging, vial tracking, and reports.