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Find calm beaches sheltered from intense seasonal northern Meltemi winds across Greek islands.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | meltemifree.com | diffyn.com |
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| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


MeltemiFree is a free, real-time web application engineered to solve a common problem for travelers in Greece: finding calm, wave-sheltered beaches during strong seasonal northern winds (the "Meltemi"). Key Features Vector Protection Engine: Uses a custom vector physics model comparing live wind...
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As answered by people managing MeltemiFree and Diffyn.
MeltemiFree's answer
Instead of dumping raw weather data, MeltemiFree calculates a dynamic Shelter Percentage. It uses a custom vector physics engine comparing live wind directions and wave swell metrics directly against a beach's exact coastal facing angle.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
MeltemiFree's answer
Generic weather apps require complex mental math to figure out if wind hits a specific cove. MeltemiFree automates this instantly—showing beachgoers exactly where water is 100% calm, wave-free, and sheltered.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
MeltemiFree's answer
Framework: Next.js 15, React 19, Tailwind CSS v4
Data & Mapping: Open-Meteo Weather API, Leaflet.js, OpenStreetMap
Diffyn's answer:
React, Next.js, POSTGRESQL
MeltemiFree's answer
Tourists & Island Hoppers: Looking for wave-free beaches across Greek destinations.
Families with Kids: Seeking safe, shallow, calm waters.
Locals & Airbnb Hosts: Finding daily beach recommendations for guests.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
MeltemiFree's answer
Built out of personal frustration with intense summer Meltemi winds ruining planned beach days. The project was built using modern web frameworks and AI workflows to turn complex wind vectors into a fast, free utility for anyone visiting Greece.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
MeltemiFree's answer
Independent tourists and island hoppers visiting Greece
Greek summer travelers and local island residents
Airbnb and hotel hosts recommending daily itineraries to guests
Families looking for shallow, calm water for young children
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