Topology checks that clip new and edited polygons to the boundaries of existing features so they never overlap - and cut a matching hole when one feature fully encloses another. Pro+ feature on Mapit GIS for Android and iOS, built for cadastral and professional data capture.
Generate a polygon buffer at a chosen radius around any existing feature (point, polyline, or polygon). Pro+ feature on Mapit GIS for Android and iOS.
Combine two adjacent features on the same layer into a single feature. Pro+ feature on Mapit GIS for Android and iOS.
Split an existing polygon or polyline feature into two by drawing a single cut line across it. Pro+ feature on Mapit GIS for Android and iOS.
Snap new and dragged vertices to existing features for topologically clean shared vertices and watertight boundaries. Pro+ feature on Mapit GIS.
Choose how new vertices are added to line and polygon features in Mapit GIS - crosshair, tap-on-map, distance and bearing, or by typing exact coordinates. Cycle between modes from the edit toolbar.