Comparison
Sources: Websites and user manuals of various manufacturers
| Hardware → | RestoreX™ | AndroPenis™ | X4™ | PeniMaster™ |
| Treatment time | 30 to 60 min/day | 9 hours/day | 5 hours/day | 3 hours/day |
| Invention developed by a doctor specializing in Lapeyronie's disease | ✔️ | |||
| Double traction force | ✔️ | ❌ | ❌ | ❌ |
| Focus of traction on deformation zone | ✔️ | ❌ | ❌ | ❌ |
| Prospective randomized clinical studies for Lapeyronie's disease | ✔️ | ❌ | ❌ | ✔️ |
| Randomized clinical studies for post-prostatectomy penis lengthening | ✔️ | ❌ | ❌ | ✔️ |
| FDA approval and CE marking | ✔️ | ✔️ | ❌ | ❌ |