About GreenRah

What GreenRah does

GreenRah is a thermal-aware walking guide. Instead of just showing the fastest route, it helps you plan cooler and more comfortable ways to get around on foot, using weather conditions, sun position, 3d modeled building and tree shade, and map data.

Heat Smart favors shaded, lower heat-stress paths when the street network allows it. Accessible favors gentler grades and avoids stairs where possible. Along the way, GreenRah can also surface practical layers like drinking water points and public toilets, and let you save places you return to often as Favorites.

Why we built it

Cities are getting hotter, and heat is a growing everyday risk for pedestrians, older residents, people with health conditions, tourists unfamiliar with local climate, and anyone without step-free mobility. Most map apps optimize for speed and distance and ignore comfort, shade, and accessibility entirely. GreenRah exists to make urban heat and accessibility visible at the moment it actually matters: when you're deciding which street to walk down.

Where we're launching

We're launching first in Lisbon, Portugal, then expanding to other cities across Portugal, and from there to the wider European Union. Because GreenRah is a web application, anyone can open it in a browser; coverage quality will be strongest in the cities we've mapped first, and will keep expanding.

The company behind GreenRah

GreenRah is operated by GreenRah OÜ, a private limited company (osaühing) registered in Estonia. We're an early-stage, founder-led team building GreenRah from the ground up. Questions, feedback, or partnership ideas: contact [@] greenrah {.} com.

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