Comparison

Peptide Plug vs Protocol

Protocol (protocolapp.health) is a privacy-first tracker with on-device storage, native iOS access, Apple Health, AI tools, labs, progress photos and cost tracking. Peptide Plug covers many of the same tracking jobs through an installable web app, with cross-device sync and stronger import and forecasting workflows.

Short version

Choose Protocol if on-device-only storage, Apple Health, native iOS, AI assistance or a 3D injection map matters most. Choose Peptide Plug if you want browser and desktop access, automatic cross-device sync, validated historical CSV import, reverse-draw and weekly-total calculations, and detailed dose, cycle and run-out forecasting.

Feature-by-feature

Based on each product's published feature and pricing pages, reviewed September 3, 2026.

Feature	Peptide Plug	Protocol
Platforms	Installable web app for phone, tablet and desktop	iOS and Android apps; free web tools
Data storage / privacy model	Cloud, per-account, encrypted in transit, never sold or shared	On-device (local SQLite), no account required on core app, no analytics tracking
Price	Free tier, no card required; Pro $4.99/mo or $49.99/yr	Free tier; Pro listed at $9.99/mo, $59.99/yr, or $69.99 lifetime
Cost tracking	✓ Dose, cycle, inventory and run-out forecasts	✓ Protocol cost tracking
Titration-step schedules	✓ Dedicated dated titration steps	✓ Titration and on/off cycles
Reconstitution calculator	✓ Target dose, reverse draw and weekly-total modes	✓
Vial inventory / expiration alerts	✓ (alerts on Pro)	✓ Inventory management with expiration alerts
AI research assistant / stack builder	Not offered	✓ Both
Injection site rotation	✓ Next-site suggestion from logged history	✓ 3D Body Map
Estimated level / PK curve	✓ 30/90-day chart from actual dose logs + public visualizer	✓ PK visualization
Side effects and wellness	✓ Dose-linked effects + configurable daily markers	✓ Daily check-ins and AI wellness coach
Progress and lab tracking	✓ Photos, measurements, labs and per-metric deep dives	✓ Progress photos, body metrics and lab tracking
Health-platform integration	Not offered	✓ Bidirectional Apple Health
Historical data import	✓ Validated CSV preview before commit	Not clearly listed in published feature set
Data export	JSON + CSV; cycle-summary CSV (Pro features vary)	CSV + PDF

Sources: protocolapp.health; Peptide Plug's own pricing and feature pages.

Where each one wins

Protocol wins on

On-device-only storage, no account required, no cloud sync on the core app
AI research assistant and AI stack builder
More visual 3D body map and native-app experience
Apple Health, progress tools and protocol templates

Peptide Plug wins on

Detailed dose, inventory, cycle and run-out forecasting
Cross-device access with automatic cloud backup
Browser access across phones, tablets and desktop
CSV import, cycle summaries and a broad free calculator suite

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Questions

Is Protocol more private than Peptide Plug?

Protocol stores data locally on-device with no account required and no cloud sync on its core app, and markets this directly ("no servers to send your data to"). Peptide Plug stores data in your account in the cloud, encrypted in transit and never shared with third parties, so you can access it across devices and never lose it if your phone breaks. Both are legitimate approaches — Protocol trades cross-device access for on-device-only storage; Peptide Plug trades on-device-only storage for cross-device access and automatic backup.

Does Protocol have cost tracking like Peptide Plug?

Yes. Protocol now lists protocol cost tracking. Peptide Plug additionally separates cost per dose, projected remaining cycle spend, inventory value and four-week forecasting.

Which is cheaper, Protocol or Peptide Plug?

Peptide Plug Pro lists $4.99 monthly or $49.99 annually. Protocol lists $9.99 monthly, $59.99 annually and a $69.99 lifetime option. Store pricing can change, so confirm before subscribing.

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