Proof of Usefulness Report

Gravitrex

Analysis completed on 1/28/2026

+64
Proof of Usefulness Score
You're In Business

Gravitrex is a legitimate early-stage medical device company with verifiable funding (NIA Startup Challenge winner, $250k Arizona Commerce Authority grant) and a patented mechanical walking-assist solution. However, the project submission itself is of very poor quality, containing false claims ('most people have used my product', 'everyone') and incorrect financial data ('marketcap' listed as revenue). While the technology and market timing (aging population) are strong, the lack of market presence (<50 users) and the unprofessional submission heavily penalize the score. The evaluation reflects the potential of the hardware verified via external search, adjusted down for the submission's lack of credibility.

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Score Breakdown

Real World Utility+22.5
Audience Reach Impact+3.0
Technical Innovation+12.75
Evidence Of Traction+13.75
Market Timing Relevance+8.5
Functional Completeness+0.25
Subtotal+60.75
Usefulness Multiplierx1.05
Final Score+64

Project Details

Description
Gravitrex, Inc is a medical device company working to transform how healthcare professionals perform walking rehabilitation to help patients recover mobility after hospitalization or a fall. Gravitrex is leveraging a novel technology to create a radically new walking-assist device that supports part of a person's weight, making walking rehabilitation safer and easier. Gravitrex is headquartered in Phoenix, Arizona, and has funding support from the National Institute on Aging, The University of Chicago Polsky Center, and others.

Algorithm Insights

Market Position
Growing utility with room for optimization
User Engagement
Documented reach suggests active user community
Technical Stack
Modern tech stack aligned with sponsor technologies

Recommendations to Increase Usefulness Score

Document User Growth

Provide specific metrics on user acquisition and retention rates

Showcase Revenue Model

Detail sustainable monetization strategy and current revenue streams

Expand Evidence Base

Include testimonials, case studies, and third-party validation

Technical Roadmap

Share development milestones and feature completion timeline