Protocol vs Pep AI
AI-powered peptide tracker
Which peptide tracking app is right for you?
Protocol wins on privacy and complete protocol tracking. Pep AI wins on bloodwork.
Pep AI is one of the most feature-rich competitors and is growing fast — they just added bloodwork tracking and an interaction checker. But Protocol has features Pep AI can't match: you can track peptides, supplements, AND daily habits in one unified protocol with one adherence score. Protocol's data stays on your device with no account required. Pep AI requires an account and cloud sync. Protocol's bloodwork and interaction checker are coming in the next version.
| Peptide dose tracking | ✅ | ✅ |
| Peptide + Supplement + Habit in one protocol | ✅ Only app that does this | ❌ |
| Injection site body map | ✅ 3D front & back simultaneously | ❌ |
| Active Levels chart (all compounds) | ✅ All compounds on one timeline | ❌ |
| Titration auto-ramp | ✅ | ❌ |
| Custom injection zone labels | ✅ e.g. left knee repair zone | ❌ |
| AI Research Assistant | ✅ 50/month Pro | ✅ Available |
| AI Check-in Coach | ✅ Analyzes your actual data | ❌ |
| AI Stack Builder | ✅ Goal → full protocol | ❌ |
| Apple Health integration | ✅ Bidirectional ✓ | ✅ Read only |
| Daily check-in & wellness tracking | ✅ | ✅ |
| Progress photos (front/side/back) | ✅ | ❌ Not available |
| Navy method body fat % | ✅ | ❌ |
| Standalone research website | ✅ 73 compound profiles | ❌ No research site |
| PK curve modeler | ✅ 1, 4, 8, 12 dose models | ❌ |
| On-device only / no accounts | ✅ No cloud, no sign-up | ❌ |
| Stealth Mode | ✅ Changes app icon | ❌ |
| Export for healthcare provider | ✅ Timestamped PDF/CSV | ❌ |
| Bloodwork & lab tracking | ❌ Coming next version | ✅ 80+ biomarkers |
| Protocol cost tracking | ✅ v3.0.0 | ❌ |
| Compound interaction checker | ✅ v3.0.0 — 30 pairs | ✅ 20+ peptide pairs |
| Stack Score & radar chart | ✅ v3.0.0 — AI-powered | ❌ |
| Home screen widgets | 🔜 Coming soon | ❌ |
- ✓Only app combining peptides, supplements & habits in one protocol
- ✓AI Check-in Coach analyzes your actual logged data — not generic advice
- ✓Active Levels chart shows all compounds simultaneously on one timeline
- ✓3D body map with front & back views and custom injection zone labels
- ✓On-device only — no account, no cloud, nobody has your data
- ✓Stealth Mode changes the app icon for complete discretion
- ✓14-day free Pro trial · $69.99 lifetime option
- ✓81 compound research profiles at protocolapp.health
- ✓Bidirectional Apple Health — reads AND writes
- ✓Bloodwork & lab tracking with 80+ biomarkers (Protocol: coming soon)
- ✓Compound interaction checker for 20+ peptide pairs (Protocol: coming soon)
- ✓Anonymous community feature for sharing protocols
- ✓AI meal scanner for nutrition logging
- ✓Actively expanding feature set
Pricing comparison
Frequently asked questions
Does Protocol have a compound interaction checker?
Not yet as a dedicated feature — it's coming soon. The AI Research Assistant can answer interaction questions conversationally right now. Ask 'Can I combine BPC-157 and TB-500?' and get a detailed answer. A structured interaction checker UI is on the roadmap.
Does Protocol have bloodwork tracking?
Coming in the next version. You'll be able to log key biomarkers (testosterone, IGF-1, estradiol, thyroid panels, and more), see trend charts, and correlate lab results with your protocol timeline. Already marked as Coming Soon on protocolapp.health/features.
Does Pep AI store data on your device?
Pep AI requires an account and syncs to the cloud. Protocol stores everything locally on your device — no account required, no cloud sync, and Apple has verified Data Not Collected. For users tracking sensitive compounds, Protocol's privacy model is meaningfully different.
Can Pep AI track supplements and habits alongside peptides?
No. Pep AI tracks peptides and recently added nutrition and bloodwork, but doesn't combine peptides, supplements, and daily habits into a single unified protocol the way Protocol does. The Injury Protocol example — TB-500 + BPC-157 + PT rehab + daily collagen — can only be tracked as one protocol in Protocol.
Try Protocol free
2 active protocols, 5 items each — free forever. No account required. Your data never leaves your device.
Get notified the moment Protocol lands on Google Play. No spam — one email, that's it.