Quadratline: Field Ecology
Robert Corbin · Education
Independent analytics for this App Store listing. AppTracker is not affiliated with Robert Corbin.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Price & rating history · US
Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.
Price · 2.99 USD now · 2 changes on record
In-app purchases · US
No in-app purchases.
About
Quadratline: Field Ecology is a focused, fully on-device app. Offline ecological survey notebook with custom quadrats and transects, abundance/cover records, Shannon and Simpson diversity, occupancy, rarefaction, GPS notes, and CSV export. KEY FEATURES - Custom quadrat and transect records - Diversity and density metrics - CSV/PDF field handoff - Local photos and site coordinates - Editable sample data and CSV import - Side-by-side scenario comparison - Local PDF evidence export - Fifty-three original offline reference plates ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core features and bundled content work offline - Work remains on device unless you deliberately share or export it through an Apple system interface Community metrics depend on sampling design and identification quality. Follow the protocol, taxonomy, permits, regional references, and agency or research requirements for the project.
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