Proof of Usefulness Report

StoneFree

Analysis completed on 2/13/2026

+35
Proof of Usefulness Score
You're In Business

The project addresses a significant medical problem (kidney stone recurrence) and appears to be a legitimate early-stage startup incubated in Berlin (Vision Health Pioneers). However, the submission quality is critically low, containing demonstrably false claims (e.g., audience is 'everyone', traction is 'most people have used my product'). While the underlying concept has high utility and market relevance within the German digital health (DiGA) ecosystem, the lack of serious data, vague technical details, and unprofessional response significantly degrade the score.

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Score Breakdown

Real World Utility+75
Audience Reach Impact+10
Technical Innovation+30
Evidence Of Traction+5
Market Timing Relevance+70
Functional Completeness+10
Subtotal+29.88
Usefulness Multiplierx1.16
Final Score+35

Project Details

Project URL
Description
We are a digital health startup from Berlin, offering a digital solution for the therapeutic follow-up of kidney stone patients. Evidence-based, patient-centered and holistic.

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