TopoKit: Offline Field GIS

All your maps. One app.

$9.99

Version 1.1 is here! Draw and measure with one set of tools, dramatically faster big projects, and much smoother PDF maps. TopoKit is a mapping app for people who actually work with maps. Not a desktop GIS crammed onto a phone, and not a hiking app pretending to handle professional data. TopoKit sits in the middle: powerful enough for GeoTIFFs and coordinate systems, simple enough to set up a field map in minutes. Built for geologists, ecologists, foresters, and anyone who takes maps into the real world. PROJECTS THAT ORGANIZE YOUR WORK Everything lives in a project. Import your rasters, vectors, and tile layers, then organize them in a hierarchical layer tree with folder nesting and drag-and-drop reordering. Control visibility and opacity per layer. Save, reopen, and sync across devices. BRING YOUR OWN DATA Import GeoTIFFs, GeoPDFs, GPX, KML, KMZ, GeoJSON, and GeoPackage. Connect to XYZ or WMS tile servers. Export in any format with your metadata intact. RASTERS THAT JUST WORK Drop a GeoTIFF or GeoPDF and it lands exactly where it belongs on your base map. Automatic CRS detection across 6,000+ coordinate systems with on-the-fly reprojection and per-layer opacity control. No manual georeferencing. OPEN ON YOUR MAC. WALK OUT THE DOOR. Build your field map on your Mac. Import rasters, set up your layers, customize your styles. When you're ready, grab your iPhone and everything is already there. Projects, rasters, vectors, downloaded tiles, all synced through your personal iCloud. Pin projects for guaranteed offline access. TAKE IT INTO THE FIELD Download tiles from your connected tile servers for offline use. Select an area, pick your zoom levels, and take your maps where there's no cell service. Record GPS tracks with three accuracy profiles and auto-pause. Measure distance, area, and bearing on the map. Attach photos to any feature. STYLES, SEARCH, AND ROUTING Save and reuse style presets for pins, lines, and polygons. Customize icons per folder. Search by place name, coordinate in any format, or feature name. Create routes and elevation profiles. YOUR DATA STAYS YOURS No accounts. No analytics. No tracking. Your data lives on your devices and syncs only through your iCloud. ONE PURCHASE. EVERY FEATURE. No subscriptions, no feature gating, no tiers. Pay once and you get the whole app. Built and supported by one developer. Questions, feedback, or feature requests? I'd love to hear from you. support@topokit.ca

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

TopoKit 1.1 — the biggest update yet. DRAW AND MEASURE, TOGETHER Add Line, Add Polygon, and the new Add Circle tool show live measurements while you draw — distance, area, radius, and more, with tappable unit switching. Just measuring? Read the numbers and close the tool — nothing is saved unless you press Save. MUCH FASTER WITH BIG PROJECTS Importing large files is dramatically faster, the map stays smooth while you pan and zoom, and project files are about half their previous size — so they open quicker and sync less. BETTER IMPORTED MAPS Very large maps keep their full detail without running out of memory, misaligned georeferenced PDFs place correctly, several Canadian coordinate systems are fixed, and PDF maps redraw much faster while zooming and panning. CHOOSE HOW IMPORTED FILES LOOK New Imported Line and Imported Polygon styles in Settings let imports look the way you want — independent from your drawing styles. SMOOTHER STARTUP Your last project starts opening much faster with far less flicker in the first seconds. ALSO FIXED • "Open in TopoKit" from the Files app now imports into your project • Style editors no longer open half-empty on iPhone • Edit panels only save what you actually changed • GPS files with bad values can no longer block a project from saving

Version 1.1

The developer, Nikolay Senilov, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Voice Control

      • Dark Interface

      • Reduced Motion

    Information

    Seller
    • Nikolay Senilov
    Size
    • 38.2 MB
    Category
    • Navigation
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later.
    • Apple Vision
      Requires visionOS 26.2 or later.
    Location
    • This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Nikolay Senilov
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

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

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