About Boolder

Boolder was born from the meeting between Romain, Cyril and Nicolas - two climbing enthusiasts and one technology enthusiast - living just a stone's throw from one of the most beautiful bouldering spots in the world: Fontainebleau.
For Nicolas, it was love at first sight. His two friends made him discover the magic of "Font": the emblematic sectors, the history of the forest, the joy of climbing in the middle of nature, as well as the rules to respect (clean your shoes!).
The richness of the forest remained however intimidating: more than 200 sectors, several tens of thousands of boulders, and hundreds of circuits for all levels. How to find your way around?
Nicolas then decided to map the forest in detail for nearly 2 years and create a modern guidebook. In 2023, Boolder launched as a free app on iPhone and Android.
Boolder is a non-profit project, managed by volunteers.
Our goal is to make discovering bouldering in Fontainebleau fun and respectful of the forest.
The project is still very young, we welcome suggestions and ideas to foster help within the climbing community. Feel free to contact us!
The code and data of the apps are available on GitHub.
We are looking for passionate climbers and coders to help us improve Boolder in a collaborative way.
We currently lack expertise for our Android app. Contact us if you want to contribute, we will be happy to talk!
For any questions, you can contact us at hello@boolder.com.
We extend our thanks to everyone who has contributed to the Font ecosystem: the route setters, the circuit creators (aka "track painters"), and all those who have contributed to the maintenance and cleaning of boulders, anti-erosion operations, ...
Special thanks to Bleau.info, whose team has referenced almost 50.000 problems with great care and passion for the past 20 years, and made it free for everyone. You can support them on their sponsoring page.
We also extend our thanks to the Cosiroc association and the Topo Bleau website, which have provided a wealth of firsthand data and carried out numerous on-the-ground operations.