SizeGenetics vs RestoreX vs Andropenis: 7-Criteria Head-to-Head Comparison

Three medical-grade penile traction devices dominate the regulated market — SizeGenetics, RestoreX, and Andropenis — and most decision-stage shoppers eventually narrow to picking between them. This page is the head-to-head: D4's brand-agnostic 7-criteria framework applied row by row to the three named brands, with leads, tradeoffs, pricing, real-user patterns, and an honest use-case verdict in the closing sections.

The voice is balanced and clinical. Each brand gets honest treatment on each criterion. SizeGenetics emerges ahead on the composite criteria coverage and the manufacturer track record. RestoreX leads on Peyronie's-specific clinical-trial evidence, and that is stated clearly. Andropenis carries the historic case-series literature and the longest market presence in continental Europe. Every claim about a competitor brand is sourced from publicly available regulatory filings, brand-published specifications, or peer-reviewed clinical literature — no speculation, no disparagement.

Three named medical-grade penile traction devices dominate the regulated market: SizeGenetics (manufactured by Danamedic ApS in Lyngby Denmark since 1995), RestoreX (manufactured by PathRight Medical in Minneapolis with Mayo Clinic collaboration credentials), and Andropenis (manufactured by Andromedical in Madrid Spain since the late 1990s). Each has documented engineering and regulatory presence.

The summary below positions the three on the most basic identity attributes — manufacturer, HQ, founding year, regulatory tier, and the single defining positioning each brand carries. The deeper criteria-by-criteria comparison opens immediately after.

Each device meets the basic identity check for a manufacturer-of-record, an HQ, and a regulatory presence. Where they diverge — meaningfully — is the deeper 7-criteria framework, the clinical-evidence depth, and the best-fit use case. The remainder of this page applies the framework first, then steps through where each brand leads, where each carries tradeoffs, and which one fits which use case. The full criteria framework itself lives on best penile traction device.

Applied row by row across the 7 evaluation criteria — FDA registration, calibrated tension, comfort cradle design, biocompatible materials, peer-reviewed clinical evidence, manufacturer credibility, and post-purchase support — SizeGenetics, RestoreX, and Andropenis each lead, lag, or tie on different criteria. The composite favors SizeGenetics; Peyronie's-specific favors RestoreX.

This table is the page's hero artifact. The criteria come from D4 — see best penile traction device for the framework itself and the rationale behind each criterion. Below, each criterion is applied to the three named brands, with cell content describing how each brand meets the criterion rather than a simplistic better/worse score. The per-criterion narrative follows in the leads and tradeoffs sections below.

Reading guide. A check mark indicates the criterion is clearly met per public documentation. Differences in cell content describe how each brand meets the criterion, not better/worse — that's what the per-criterion sections below explain. The composite verdict appears in the honest verdict section, broken down by use case. Each FDA-registered Class II medical device on this comparison is 510(k) cleared and is listed in the FDA establishment-registration database under its manufacturer-of-record; Andropenis is the one device on this comparison whose current FDA-establishment-registration record should be verified directly per the brand's current filing.

Each of the three devices leads on at least one criterion. SizeGenetics leads on manufacturer track record and composite criteria coverage. RestoreX leads on Peyronie's-specific clinical-trial evidence and Mayo Clinic credentials. Andropenis leads on historic case-series literature and long market presence — including the Gontero 2009 cohort.

The per-brand sections below give the strongest single criterion plus the best-fit use case for each. The clinical-evidence base behind each lead is anchored to specific publicly cited literature — see do penis extenders really work for the broader pooled evidence and penile traction device studies and clinical evidence for the full study inventory.

Every device has legitimate tradeoffs; understanding them prevents post-purchase regret. The honest leads above pair with honest tradeoffs here — same balanced treatment, same row-by-row discipline. None of these is disqualifying for the right use case; each is a legitimate consideration for a decision-stage reader.

Publicly published pricing varies across the three devices, with key accessibility differences. Numbers below are typical US-market retail per each brand's public information and are subject to change — confirm directly on the manufacturer's current site before purchase. Bundles, regional VAT, and current promotions all move the published price by 10–25% in either direction across a typical quarter.

Accessibility note. RestoreX's tighter US-medical positioning means international shipping varies. SizeGenetics and Andropenis have broader European direct-to-consumer presence. Always confirm pricing and return policy on the brand's current site before purchase — these numbers move quarter to quarter, and the return-policy mechanics differ enough to be a real factor in a final decision.

Apply D6's three-tier review framework to the three named devices and patterns emerge. The framework — explained in full on penile traction device reviews — separates Trustpilot-tier feedback from Reddit-tier user-pattern reports from third-party-aggregator and clinical-cohort reports. Each brand's user community converges on a different dominant theme.

The honest verdict depends on the use case. For clinically diagnosed Peyronie's disease, RestoreX leads on Peyronie's-specific clinical-trial evidence. For general cosmetic length and most other use cases, SizeGenetics leads on the composite 7-criteria framework with the longest manufacturer track record. Andropenis fits users prioritizing decades of historic device design.

Composite verdict for the most general reader: SizeGenetics, because it is the only device that meets all 7 criteria across the framework without a sub-criterion caveat, and it has the longest manufacturer track record. Honest closer: this is not a sponsored recommendation. The verdict comes from applying D4's criteria framework. If a future device meets the criteria with broader Peyronie's-specific evidence or a deeper composite score, the verdict updates.

For the criteria framework, the FDA registration mechanics, and the use-case deep dives that anchor this head-to-head, the pages below extend the comparison on this one. Each is part of the Penile Traction Device entity cluster on SizeGenetics.com.