Strike and Dip4.9 - App Store

Strike and Dip turns your iPhone into a pocket transit. Take strike & dip measurements, bearings, plunge, and all that geological goodness, while simultaneously getting your latitude, longitude, and elevation. Save your measurements as notes, and add photos to your notes. Now also with maps (geological in the U.S. and some other parts of the world) that show the locations of all your saved data. Customizable to how you work: choose between azimuth and quadrant formats for bearings, three formats for coordinates, meters and feet, and three different formats for strike and dip.

Version History • Updated for iOS 26
• Bug fixes 4.9 Jul 25 • Updated for iOS 18
• Bug fixes 4.8 12/08/2024 • Locations of images added to notes are now saved
• Added Lock Screen widget - open Strike and Dip right from the Lock Screen
• Updated for iOS 16 4.7 02/18/2023 • Updated for iOS 15
• Updated Dropbox support
• User interface improvements, especially to the map and bearings 4.6 11/06/2021 • Updated for iOS 14
• User interface improvements
• Bug fixes 4.5 11/25/2020 • Updated for iOS 13
• Support for dark mode
• Accessibility improvements
• User interface improvements
• Minor bug fixes 4.4 09/20/2019 • Updated for iOS 12 and the newest iPhones
• Can now also export your notes as a pdf
• Exporting now includes the names of photos 4.3 12/08/2018 • fixed bug that could cause strike & dip and bearing indicators to behave erratically in some cases 4.2.2 04/12/2018 • Uses the latest geologic maps from macrostrat.org 4.2.1 02/12/2018 • Now export your notes as a .kml file for Google Earth (and you can still export them as a .csv file)
• Works with iPhone X 4.2 01/06/2018 • Fixed bug that prevented previously-collected data from being displayed 4.1.1 10/11/2017 • Updated for iOS 11 4.1 10/08/2017 • Fixed bug that could cause crash when emailing notes 4.0.3 05/02/2017 • Fixed issue that would prevent the first photo from being saved
• Fixed bug that could cause app to crash when accessing photos 4.0.2 03/20/2017 • Fixes an issue where previously-saved data would not be shown in the Notes table 4.0.1 02/25/2017 • Maps now include a geologic map overlay, supplied by macrostrat.org
• The location of your measurements and notes are now also shown on maps, and you can see their data by tapping on them
• Numerous code improvements and some bug fixes 4.0 02/18/2017 • Fixed bug that would cause the notes to be hidden by the keyboard 3.1.1 05/12/2016 • updated for iOS8

• now supports iPad, iPhone 6, and iPhone 6 Plus

• export notes to Dropbox and iCloud Drive

• support for UTM coordinates 3.1 01/20/2015 • Added support for the 4-inch screens.
• Redesigned throughout for iOS 7.
• Separate tools for measuring strike and dip, bearing, and vertical angles, with easy-to-use and continuously updating depictions of what is being measured.
• A photo can now be attached to each note, and these photos are stored in the Photos library.
• Current location now displayed on a map, including standard, satellite, and hybrid types. 3.0 09/18/2013 • Current location can now be displayed on a map within the app (accessible from Strike/Dip tab)
• Added support for devices with Retina displays
• Fixed bug that caused an incorrect longitude to display on the Strike/Dip tab
• Fixed bug that prevented all notes from being deleted
• Fixed bug that would cause degrees symbol in downloaded notes from being displayed correctly
• User interface enhancements
• Internal code improvements 2.5 11/07/2012 • User interface enhancements
• Resolved condition in which elevation would not correctly display in yellow 2.4 09/04/2012 • Data can now be retrieved through iTunes and it can be emailed.
• All data can be deleted in one step.
• Precision of strike measurements is improved.
• Strike and bearing measurements can now be taken when declination is not available. Screen shows that only magnetic bearings are available in these cases, and notes are flagged as being based on magnetic bearings. This also eliminates the -1 that previously appeared in the strike/dip and bearing screens when the current location could not be obtained.
• User interface enhancements.
• Fixed issue in which dip direction and dip would be labeled incorrectly in the notes as strike and dip.
• Bearings are now saved in the selected format.
• Coordinates are now displayed in notes list in the selected format.
• Fixed bug that could prevent a new note from being created on the notes screen. 2.3 10/11/2011 Fixed issue which could cause an incorrect magnetic declination to be displayed 2.2.1 05/27/2011 Added vibrate feedback when a note is added.
Resolved issue that could prevent editing of a note. 2.2 04/25/2011 New formats for strike and dip: choose among right-hand rule, north-half rule, and dip-direction rule. 2.1 02/23/2011