Quadratline: Field Ecology

Quadrats, transects, diversity

$2.99 · Designed for iPad. Not verified for macOS.

Plan quadrats and transects, calculate field-community metrics, compare samples, and preserve transparent ecological evidence entirely on device. 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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The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    • Robert Corbin
    Size
    • 92 MB
    Category
    • Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Age Rating
    4+
    Copyright
    • © 2026 Robert Corbin
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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