About
Instantly assess clay soil risk and geotechnical study requirements before property transactions or construction. Access official data on swelling-shrinking clay exposure and regulatory obligations.
What's New in ZoneG1
1.2.5
April 18, 2026
Améliorations d'affichage pour iPhone et iPad : - Suppression du message "Zoomez pour voir les zones de risque" qui gênait l'affichage de la légende RGA sur certains écrans. Merci d'utiliser ZoneG1 !
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Cadastre, GPS, PDF, history, favorites, RGA alerts
FAQ
What is ZoneG1?
ZoneG1 is a tool that helps you determine the risk level of swelling-shrinking clays (RGA) in your land and whether a G1 geotechnical study is legally required before buying, selling, or building in France.
Does ZoneG1 have ads?
Yes, ZoneG1 contains advertisements to support its free features. Users can opt for premium subscriptions to access an ad-free experience and advanced functionalities.
How much does ZoneG1 cost?
ZoneG1 offers a free version with basic features. Premium subscriptions are available for €4.99/year, and Pro subscriptions for €24.99/year, which include all premium features plus additional professional tools.
What devices does ZoneG1 support?
ZoneG1 is available on iPhone and iPad devices. It is optimized for iOS and can be used on iPods as well.
When was ZoneG1 last updated?
ZoneG1 was last updated on April 18, 2026, with version 1.2.5. This indicates frequent updates to ensure data accuracy and feature enhancements.
How do I cancel my ZoneG1 subscription?
You can manage and cancel your subscriptions within your App Store account settings. Ensure you cancel at least 24 hours before the end of the current period to avoid automatic renewal.
What is the age rating for ZoneG1?
ZoneG1 has an age rating of 4+. This means it is suitable for users of all ages, with no content restrictions.
Where does ZoneG1 get its data?
ZoneG1 uses official data from the BRGM, Géorisques, and the GASPAR database of the Ministry of Ecological Transition. This ensures the information provided is reliable and up-to-date.