Peptide Plug vs Glapp
Glapp is the closest competitor to Peptide Plug on inventory, and the only one of the major GLP-1 trackers that publicly names a concept for the between-shot curve — “shot phases.” Both track vials and remaining doses. The differences are in reconstitution math, cost and clinical data.
Short version
Glapp is the stronger fit if you want native apps plus a web version and a well-designed view of where you are in the weekly cycle. Peptide Plug is the stronger fit if you reconstitute your own vials, want cost per dose and cost per month, or want lab values on the same timeline. Glapp describes itself as free and does not publish paid pricing; Peptide Plug is $4.99/mo or $49.99/yr above a one-cycle free tier.
Feature-by-feature
Based on Glapp's published product and pricing pages and this Peptide Plug build, reviewed September 9, 2026.
| Feature | Peptide Plug | Glapp |
|---|---|---|
| Platforms | Installable web app for phone, tablet and desktop | Native iOS + Android + web |
| Free tier | 1 active cycle, all public calculators, no card | Described as a free tracker |
| Published price | $4.99/mo or $49.99/yr | Paid 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 |
| Vial inventory | ✓ Vials, diluent, reorder and mixed-vial expiry alerts | ✓ Vial inventory, remaining doses, expiry dates |
| Lab tracking | ✓ Manual labs with chart overlays | Not stated |
| Estimated levels | ✓ Estimated level curve + public 86-compound half-life table | ✓ Estimated concentration + “shot phases” |
| Side-effect logging | ✓ Dose-linked effects | ✓ Named side effects tracked |
| Weight / progress | ✓ Weight, measurements, photos | ✓ Weight loss progress and reports |
| Health-platform sync | Not offered | Not stated |
| Data export | ✓ Full JSON + CSV export | Not stated |
| Public calculators | ✓ 17 free calculators, no account | Tirzepatide calculator + GLP-1 plotter |
Sources: glapp.io. "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
- You reconstitute vials and need concentration and syringe-unit math, not just dose logging.
- You want cost per dose and cost per month, which changes as you move up dose steps.
- You want lab values plotted against your dose history.
- You want your full history exportable as JSON or CSV.
- You want a large set of free calculators that need no account at all.
Pick Glapp for
- You want native iOS and Android apps as well as a web version.
- “Shot phases” is a genuinely good frame for where you are in the weekly cycle.
- You want a polished consumer weight-loss experience rather than a protocol tool.
- You want vial inventory without paying for it — Glapp presents itself as free.
Which should you pick?
These two overlap more than any other pair on this site. If you use pre-filled pens and want the cleanest consumer experience, Glapp. If you mix your own vials or care what a dose costs, Peptide Plug.
Common questions
Do both track vial inventory?
What are Glapp's “shot phases”?
Which is better for compounded vials?
Is Glapp free?
Can I export my data from either?
Try the free tools first
Every Peptide Plug calculator runs in your browser with no account and nothing stored.
Open the free tools