Quadratline

Quadrats, transects, diversity

Purpose-Built

Offline ecological survey notebook with custom quadrats and transects, abundance/cover records, Shannon and Simpson diversity, occupancy, rarefaction, GPS notes, and CSV export.

Core Features

Custom quadrat and transect records
Diversity and density metrics
CSV/PDF field handoff
Local photos and site coordinates

Private by Design

No account, subscription, ads, tracking, third-party analytics, or developer-operated backend. Core features work offline, and your work stays on device unless you deliberately share or export it.

Use It Responsibly

Community metrics depend on sampling design and identification quality. Follow the protocol, taxonomy, permits, regional references, and agency or research requirements for the project.