COGO Survey Calculatorv2.1
Released September 5, 2026Major
iOS
What changed
- UXAdded customizable misclosure bearing display options for azimuth/quadrant and DMS/decimal formats.
- UXIntroduced entry defaults in Preferences for distance units, azimuth/quadrant entry, and angle format.
- New featureEnabled in-place editing of traverse legs with automatic recomputation of coordinates, closure, and area.
- New featureAdded support for mixed units per leg (metres, feet, links) with background conversion.
- New featureAdded Line Tools for four-point intersection and parallel/perpendicular constructions.
- New featureAdded Common Tangent tool to calculate all four tangents between two circles.
- New featureAdded Two Unknowns solver for missing distances or bearings against a closing point.
- New featureAdded Recessed Invert field-term calculator for pipe inverts with a diagram.
- UXAdded 'What's New' and Version history screens in Preferences.
Original release notes
v2.1 is built from working surveyors' feedback: misclosure bearings the way you read them, editable legs, mixed units, and four new geometry tools. • Misclosure bearing display: choose azimuth or quadrant and DMS or decimal. Closure & Area shows the bearing at full size, the plot legend and PDF report follow the same setting. • Entry defaults: set your distance unit, azimuth/quadrant entry, and angle format once in Preferences. • Edit any traverse leg in place — downstream coordinates, closure, area, and plot recompute. • Mixed units per leg: type metres, feet, US survey feet, or links on any leg; the job converts in the background. Changing a job's unit now converts stored values. • Line Tools: four-point intersection, parallel and perpendicular constructions with station, offset, and left/right. • Common Tangent: all four tangents between two circles (L-L, R-R, L-R, R-L) from two centres or a bearing + distance, with offsets. • Two Unknowns: solve two missing distances, bearings, or one of each against the closing point, offsets included, and apply the result. • Recessed Invert: field-term calculator for recessed pipe inverts with a diagram. • What's New on update and a Version history screen in Preferences. Fully offline. Thanks for using COGO Survey Calculator.