Peptide Plug vs Shotsy
Shotsy is one of the most established GLP-1 tracking apps, with native iOS and Android apps and a large published guide library. Peptide Plug comes at the same problem from the vial side — reconstitution math, cost per dose and inventory economics — and runs in the browser rather than an app store.
Short version
Shotsy is the stronger fit if you want a polished native app, Apple Health sync, nutrition and water logging, and PDF export for a clinician. Peptide Plug is the stronger fit if your medication arrives as a vial rather than a pen, or if you care about cost per dose, vial run-out and mixed-vial expiry. Shotsy is free with a premium tier it does not price publicly; Peptide Plug is $4.99/mo or $49.99/yr above a one-cycle free tier.
Feature-by-feature
Based on Shotsy's published product and pricing pages and this Peptide Plug build, reviewed September 9, 2026.
| Feature | Peptide Plug | Shotsy |
|---|---|---|
| Platforms | Installable web app for phone, tablet and desktop | Native iOS + Android |
| Free tier | 1 active cycle, all public calculators, no card | Free to download and use; premium tier exists |
| Published price | $4.99/mo or $49.99/yr | Premium pricing not stated on the site |
| Reconstitution math | ✓ Full reconstitution, blend and syringe-unit math | Not stated |
| Cost per dose / run-out | ✓ Cost per dose, per month and vial run-out forecasting | Not stated |
| Inventory & expiry | ✓ Vials, diluent, reorder and mixed-vial expiry alerts | Not stated |
| Lab tracking | ✓ Manual labs with chart overlays | Not stated |
| Estimated levels | ✓ Estimated level curve + public 86-compound half-life table | ✓ Estimated medication levels |
| Injection-site rotation | ✓ Site logged per injection with previous site shown | ✓ Visual site mapping |
| Nutrition & water logging | Not offered — not a food diary | ✓ Nutrition and water |
| Health-platform sync | Not offered | ✓ Apple Health (iOS) |
| Clinician export | ✓ Full JSON + CSV export | ✓ PDF export |
| Guide library | Guides section on site | ✓ Large published guide library, 9 languages |
Sources: shotsyapp.com. "Not stated" means the feature was not described on the pages reviewed — it does not confirm the feature is absent.
Where each one wins
Neither is better at everything. These are the honest trade-offs.
Pick Peptide Plug for
- Your medication comes as a vial and you need reconstitution and syringe-unit math.
- You want real cost per dose and a vial run-out date rather than a rough estimate.
- You track mixed-vial expiry windows alongside dose counts.
- You want lab values on the same timeline as doses.
- You would rather not install anything — it runs in the browser.
Pick Shotsy for
- You want a native app with the polish that comes from app-store distribution.
- You use Apple Health and want weight and activity flowing in automatically.
- You want nutrition and water logging in the same app as your doses.
- You want a PDF you can hand to a clinician.
- You want a large library of GLP-1 guides, available in several languages.
Which should you pick?
If you use a pre-filled pen and want a polished native app with health sync and nutrition logging, Shotsy is the better tool. If your medication arrives as a vial, or you want to know what each dose actually costs and when the vial runs out, Peptide Plug does work Shotsy does not describe.
Common questions
Is Shotsy or Peptide Plug cheaper?
Which one handles compounded medication from a vial?
Does either app sync with Apple Health?
Can I use Peptide Plug without installing an app?
Do both estimate medication levels?
Try the free tools first
Every Peptide Plug calculator runs in your browser with no account and nothing stored.
Open the free tools