At a glance
| Feature | Peptide Protocol | Peptide Tracker & Calculator |
|---|---|---|
| Platform | iPhone (native SwiftUI) + free web tools | iOS, iPadOS, macOS, visionOS |
| iCloud sync across Apple devices | Yes | Yes |
| Peptide glossary (public, indexed) | 29+ peptidesFree on web | In-app only |
| Reconstitution calculator | YesIn-app + web, shareable by URL | Yes |
| Dose converter (mcg/mg/IU) | Yes | Partial |
| Half-life visualizer | YesWeb-based, interactive | In-app |
| Injection site rotation (body map) | Body map with cooldown state | Yes |
| Inventory and vial tracking | Yes, with runway estimate | Yes |
| Stacks / editorial combination guides | 7 stacksPublic, free | Not available |
| Pillar guides (reconstitution, injection, storage) | 4 published guides | Not published |
| Regulatory / legality reference | US, UK, AU, CA, DE | Not available |
| Price | Freemium | $4.99/mo or $24.99/yr |
Feature comparison reflects public information as of April 2026. Check each app's listing for the most current feature list.
Where Peptide Protocol is stronger
Public educational surface
We publish a 29-peptide glossary, editorial stacks, four pillar guides, and a country-by-country legality page — all free, all indexed. Peptide Tracker & Calculator keeps everything behind the in-app paywall.
Shareable tools by URL
Every calculation you run on our web tools has a shareable URL with your inputs pre-filled. Useful for forums and messaging friends. In-app calculators can't do that.
Simpler pricing
Freemium on the app; free on the web. No annual commitment required to use the core math.
Where Peptide Tracker & Calculator is stronger
iPad + Mac + Vision Pro
Peptide Tracker & Calculator runs native on iPadOS, macOS, and visionOS today. Peptide Protocol is iPhone-first — iPad support is on the roadmap.
Established user base
If you already have months of tracking history in Peptide Tracker & Calculator, switching means rebuilding trend lines.
Which to pick
Pick Peptide Protocol if…
You value a public educational reference, free web calculators, and editorial stack guides alongside the tracker — and you're primarily on iPhone.
Pick Peptide Tracker & Calculator if…
You need native iPad, Mac, or Vision Pro clients today, and you don't need external reference content.
How this page is maintained
This comparison is written by the Peptide Protocol team and is inherently biased toward our own strengths — we try to be fair about Peptide Tracker & Calculator's, but the honest way to evaluate is to try both when possible. We update this page when feature sets change. If you spot something that has changed on either side, tell us.