At a glance
| Feature | Peptide Protocol | PeptIQ |
|---|---|---|
| Platform | iPhone (native SwiftUI) | iPhone + Android |
| Dose scheduling and reminders | YesPer-protocol cadence, site rotation, snooze | Yes |
| Built-in reconstitution calculator | YesIn-app + free web calculator | Yes |
| Dose converter (mcg/mg/IU) | YesAlso free on web | Partial |
| Half-life visualizer | YesFree interactive chart | Not available |
| Injection site rotation (body map) | YesLive body map with cooldown state | List-based |
| Inventory and vial tracking | YesRunway estimate, refill alerts | Yes |
| Trend insights (energy, mood, sleep) | YesDaily log + auto-correlated trends | Partial |
| Side-effect tracking | Yes | Yes |
| Weekly report / adherence | YesAutomatic, with narrative interpretation | Basic |
| Peptide reference library | Yes29+ peptides, free web glossary | Yes |
| Free public tools | YesCalculator, converter, visualizer — no sign-up | Not available |
| Data export | Yes | Partial |
| Privacy-first (no account required) | YesLocal-first, iCloud sync optional | Account required |
| Price | Freemium | Subscription |
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
Depth of protocol tracking
Peptide Protocol treats each peptide as a protocol with its own schedule, reminder, inventory, rotation state, and history. Adding a new peptide doesn't just create a reminder — it adds a first-class object with adherence, runway, site tracking, and side-effect log, all cross-referenced on the dashboard.
Built-in math, actually used
The in-app reconstitution calculator, dose converter, and half-life visualizer are also available as free web tools. That means the same math you use in the app is shareable, bookmarkable, and usable from any device without installing anything. We publish them publicly because we think the math shouldn't be gated.
Site rotation that actually prevents tissue damage
Our body-map rotation shows which sites are ready, cooling down, or recommended next — not just a list of previous sites. This matters for preventing lipohypertrophy on protocols that inject daily or more often.
Educational content
We publish guides and a glossary as free reference material, not gated app content. If you use Peptide Protocol, you don't need a separate education app.
Where PeptIQ is stronger
Android availability
PeptIQ is available on Android; Peptide Protocol is iPhone-only for now. If you're on Android, that's a decisive factor today.
Existing users
If you already have months of PeptIQ history, the cost of migrating is real. Switching trackers loses trends until you rebuild them.
Which to pick
Pick Peptide Protocol if…
You're on iPhone, you want serious protocol depth, you inject frequently enough that site rotation matters, and you like that the math is available free on the web even before you install the app.
Pick PeptIQ if…
You're on Android, you already have PeptIQ history you don't want to lose, or its specific feature set fits your protocol better than what's described above.
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 PeptIQ's, but the honest way to evaluate is to try both. Both apps have free tiers; both have App Store listings with screenshots.
We update this page when feature sets change. If you spot something that has changed on either side, tell us.