Avenza Maps is a mobile app for offline maps and GPS field work. Users load maps (such as GeoPDF, GeoTIFF and KMZ) onto their device and work with them without an internet or mobile connection. The app provides navigation, capture of points, lines, polygons, photos and notes with custom attributes, custom forms and support for external Bluetooth GPS receivers. Maps are prepared in Global Mapper and distributed to devices; collected data can be exported. The app is installed from the iOS and Android app stores.
Avenza Systems, originally based in Toronto (Canada), merged with Blue Marble Geographics of Hallowell, Maine (US) in 2026 and continues under that brand. According to the announcement, Blue Marble Geographics is backed by the investment firm Eterna Growth Partners. The privacy policy contains a GDPR notice but names no storage location. Because maps are held locally on the device, usage stays largely offline; for European organisations, accounts and purchases nevertheless fall under US jurisdiction.