The Leader in Every Category That Matters.
Free on iOS and Android. No account required.
No account · On-device · Free
Full Comparison · 2026
Every major peptide tracker across 20 capabilities. No hedging, no "it depends." The full table.
The Data
| Feature | Protocol | PepTracker | Dose | PeptIQ | Hacksmith |
|---|---|---|---|---|---|
| Platform | iOS + Android | iOS only | iOS only | iOS only | Web only |
| Free tier | Full featured | 2 protocols max | Yes (limited) | Paid required | Web free |
| No account required | ✓ | ✗ | ✓ | ✗ | ✓ |
| On-device privacy | ✓ | ✗ | ✓ | ✗ | ✗ |
| Stealth mode | ✓ | ✗ | ✗ | ✗ | ✗ |
| Reconstitution calculator | ✓ | ✓ | ✓ | ✓ | ✓ |
| Custom Draw reverse mode | ✓ Unique | ✗ | ✗ | ✗ | ✗ |
| PK half-life plotter | ✓ 22 compounds | ✗ | ✗ | ✗ | ✗ |
| TRT ester calculator | ✓ | Basic | ✗ | ✗ | ✗ |
| Stack cost calculator | ✓ Unique | ✗ | ✗ | ✗ | ✗ |
| AI features | ✓ 6 touchpoints | ✗ | ✗ | ✗ | ✗ |
| 3D injection site map | ✓ | ✗ | ✗ | ✗ | ✗ |
| Bloodwork / lab tracking | ✓ | ✗ | ✗ | ✗ | ✗ |
| Compound library | 81 profiles | Some | ✗ | ✗ | 190+ price data |
| Cycle / protocol planning | ✓ | ✓ | ✓ | ✓ | ✗ |
| Side effect tracking | ✓ | ✗ | ✓ | ✗ | ✗ |
| Apple Health sync | ✓ | ✗ | Partial | ✗ | ✗ |
| Lock screen widget | ✗ | ✗ | ✓ | ✗ | N/A |
| PDF/CSV export | ✗ | Premium | ✗ | Premium | ✗ |
| Price comparison database | ✗ | ✗ | ✗ | ✗ | 190+ peptides |
Data as of June 2026. ✓ = available. ✗ = not available. "Unique" = only app with this feature as of this date.
The Takeaway
Protocol is the only app in the table with Android support, Custom Draw, PK plotter, stack cost calculator, AI features, 3D injection site tracking, and bloodwork logging — simultaneously. No other single app has more than 3 of these. The gap between Protocol and the nearest competitor on feature count is not incremental — it's categorical.
Two areas where competitors have genuine advantages over Protocol: Hacksmith's price comparison database (190+ peptides, genuinely unique), and Dose's lock screen/home screen widgets. Protocol has neither. If price research or widget access are your primary criteria, those apps serve those needs specifically.
The full in-depth review is at bestpeptidetracker.org. The 8-criteria scorecard is on the BestPeptideTracker.net homepage.
Free on iOS and Android. No account required.
No account · On-device · Free