Proof of Usefulness Report

Cronofy

Analysis completed on 1/19/2026

+758
Proof of Usefulness Score
Unicorn Utility

Cronofy is a highly established B2B infrastructure provider (founded 2014) solving the complex problem of calendar synchronization. While the submission itself was sparse and lacked data, external verification confirms massive traction: over 180,000 companies served, 1 billion+ events processed, and a recent £15M (~$19M) investment round in May 2025. The project is a market leader in its niche ('Twilio for Calendars'), justifying a score significantly above the baseline despite the poor quality of the submission text.

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Score Breakdown

Real World Utility+238
Audience Reach Impact+162
Technical Innovation+128
Evidence Of Traction+221
Market Timing Relevance+90
Functional Completeness+5
Subtotal+844
Usefulness Multiplierx0.90
Final Score+758

Project Details

Project URL
Description
Cronofy delivers a single API for developers to integrate their apps and services with their users' calendars. \n\nWe allow \n- ATS (application tracking systems) to make interview scheduling into a one click process \n- Labour marketplaces to access real time inventory\n- Travel providers to deliver optimized always up-to-date itineraries\n\nIn the first instance we're Twilio for calendars. We deal with all of the complexity of multiple calendar providers, handling the data mapping, authorization, and synchronization plumbing required to deliver reliable integration.\n\nWe're also PayPal for calendars in that we act as a trusted clearing house for calendar data. We allow apps to request just the level access to calendar data they need rather than have to deal with everything that users could have in their calendars. Our customers are protected from dealing with the highly personal data they're not set up to handle.
Audience Reach
everyone
Target Users
everyone
Technologies
Developer Tools, Software Development, Devops
Traction Evidence
most people have used my product

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