Your coordinates.
A new frame
of reference.

CoordCap is an iPhone coordinate capture and conversion app for fieldwork, GIS and surveying workflows. Convert manually entered coordinates between supported reference systems with PROJ, copy or share manual results as text, and read original coordinates from the camera or an imported image for free. The dedicated built-in WGS 84 ↔ UTM workflow also includes capture, review, saving and export. PRO extends converted captures, coordinate-list workflows and saving results to added transformations, including catalog operations and custom Helmert transformations.

Yes. CoordCap converts WGS 84 latitude and longitude to UTM and back. Choose the UTM zone and hemisphere, and work with decimal degrees (DD), degrees and decimal minutes (DMM), or degrees, minutes and seconds (DMS).

Search the bundled PROJ database by EPSG code or reference-system name for geographic and projected systems, including national grids. Available operations depend on the source and target systems, area of use and required grid files. Review the selected operation before relying on the result.

Yes. Define a custom 3-parameter or 7-parameter Helmert transformation, or a time-dependent Helmert transformation with parameter rates and a reference epoch. For rotations, choose the Position Vector or Coordinate Frame convention to match your parameters. Creating supported transformations and converting manually entered coordinates are free. You can copy or share manual results as text. Saving those results in the app, or using those transformations for converted camera and image captures, requires PRO.

Yes. Set coordinate epochs for supported reference systems and operations, or use a custom time-dependent Helmert transformation. A coordinate epoch describes when a position applies, expressed as a decimal year such as 2026.5. Transformations between epochs depend on a suitable operation or motion model and any required grids. Creating supported transformations and converting manually entered coordinates are free. You can copy or share manual results as text. Saving those results in the app, or using those transformations for converted camera and image captures, requires PRO.

Coordinate recognition and conversion run on your iPhone. Operations that need grid files work offline after those files have been downloaded. Download the grids you need before fieldwork. Grid downloads, map content and App Store purchases require an internet connection.

CoordCap processes images and coordinates on your device without uploading them to a developer server. You choose whether to export or share results. Apple map services, optional PROJ grid downloads and purchases make separate network requests. Your device backup settings may include locally stored app data.

Manual conversions, copying and sharing manual results as text, and reading original coordinates are free. Built-in WGS 84 ↔ UTM also includes capture, review, saving and export. PRO unlocks converted captures, coordinate-list workflows and saving results with all your added transformations. PRO is a one-time purchase through Apple. Previously saved records remain accessible and exportable without PRO. Added transformations include operations selected from the reference-system catalog and custom Helmert transformations. The free WGS 84 ↔ UTM exception applies to the dedicated built-in workflow. No subscription. See the current price in the app.

Yes. Copying or sharing manual conversion results as text is free. The dedicated built-in WGS 84 ↔ UTM workflow also includes capture, saving and CSV or TSV export for free. PRO extends converted captures, coordinate-list workflows and saving new results to added transformations, including manually entered results. Captured lists and saved results can be exported as CSV or TSV. Previously saved records remain available to view, rename, delete, share and export without PRO; exporting an existing saved record is not separately paywalled. Adjust the separator, coordinate format and output precision to suit your workflow. Check the coordinate order, reference system and units when importing the file into another tool.

Accuracy depends on the original coordinates, their reference system, the selected transformation, any required grids and the quality of image recognition or device location. Extra decimal places do not improve source accuracy. Review captured values and validate important results against a trusted reference.