Proof of Usefulness Report

Rainbow

Analysis completed on 2/13/2026

+464
Proof of Usefulness Score
Industry Mainstay

Rainbow (be-rainbow.com) is a verified French health-tech/CPG company operating brands 'Kaya' (adaptogens/CBD) and 'Peace & Skin'. Despite a low-quality submission (hyperbolic claims, data entry errors), external verification confirms significant traction: €2M+ funding raised in 2021, projected revenues exceeding €5M, and distribution in major retailers like Monoprix. The team size (125) and 'marketcap' (€17M valuation) align with a scaling Series A startup. The project demonstrates strong real-world utility and verified commercial success, placing it in the 400-500 score range despite the poor form response.

Ready to Compete for $150k+ in Prizes?

Move this data into a HackerNoon blog draft to become eligible for your share of $150k+ in cash and software prizes

View All Reports

Score Breakdown

Real World Utility+112.5
Audience Reach Impact+72.0
Technical Innovation+36.0
Evidence Of Traction+162.0
Market Timing Relevance+42.0
Functional Completeness+4.5
Subtotal+429
Usefulness Multiplierx1.08
Final Score+464

Project Details

Project URL
be-rainbow.com
Description
Rainbow is a health tech company aiming to improve well-being thanks to innovative and sustainable ingredients, such as adaptogenic plants, cannabinoids and mushrooms. Focusing on wellness consumer brands and finished products, Rainbow operates 3 brands : Kaya (distributed on-line in drugstores, and pharmacies), Rainbow (distributed in mass retail) and Peace & Skin (distributed in drugstores and pharmacies). Rainbow has operations in France, Italy and the UK. see : www.kaya.io www.peaceandskin.com

Algorithm Insights

Market Position
Strong market validation with clear user adoption patterns
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