By Hunter Research and Technology, LLC

Score: 4.5
From 1,393 Ratings


***** 40%-OFF SALE ***** Theodolite is on sale for 40%-off to celebrate its seven year anniversary! ***** As seen in Apple's Special Event Keynote, Theodolite is a multi-function viewfinder for iPhone and iPod touch that combines a compass, two-axis inclinometer, rangefinder, GPS, map, nav calculator, tracker, and geo-tag photo/movie camera into one indispensable app. Uses are endless, and the app is great for hiking, boating, hunting, golf, outdoor sports, sightseeing, navigation, and finding your way around. Theodolite is used extensively by surveyors, geologists, architects, engineers, competitive sportsmen, first responders, military personnel, and search and rescue workers around the world. Theodolite lets you take geo-tagged camera images, screenshots, movies, and screen movies directly from the app, with 2X and 4X digital zoom and fast buffered saves. You can choose to overlay geographical data, time, date, and custom notes directly on photos and movies for later reference. View your current position on the built in map view, with optional new Outdoors maps that include topo contours (feet or meters), roads, trails, landmarks, campgrounds, ski lifts, and more. Custom "live" map markers continually update distance/heading relative to the current location. Share map markers and nav calculator points with other users of Theodolite and Theodolite HD via SMS text messages and e-mail. This powerful capability opens up a wide range of collaborative uses which include team land surveying, accident investigations, spotting of wild fires, triangulation of landmarks, and advanced tactical observation and targeting operations. Theodolite includes features for serious users like a reference angle mode, a nav calculator, data logging, e-mail export with KML, system-wide clipboard integration, percent grade display, mil compass readout, optical rangefinders (including a mil-based reticle, sniper-style stadiametric graphs, and a variable 4X-24X scope), and colored lens filters to improve use in dark conditions and preserve night vision. The app can provide location in military grid reference system (MGRS) coordinates, universal transverse Mercator (UTM) coordinates, British/Irish National Grids, US National Grid, and six latitude/longitude formats. Optional US State Plane coordinates include SPCS27 and SPCS83 zones covering all US States. The optional Datum Pack adds over 230 geodetic datums to the app for more accurate position and altitude computation from GPS data, covering regions and countries on all continents around the world. With an optional in-app purchase to enable team tracking, you can share location with up to 20 people on Theodolite's map. Team tracking was developed in conjunction with search and rescue teams to offer a good balance between simplicity and performance. Theodolite has been featured several times in iTunes in "Rewind: Hot Trends in Apps", "The World Around You", and "New and Noteworthy". It has been a #1 selling Navigation app in App Stores around the world. Since its introduction in 2009, Theodolite has defined augmented reality navigation. The app continually introduces new technologies, pushing the limits of iOS app development. Find out why Apple named Theodolite one of the most amazing apps available and showed it being used to explore the Great Wall of China. Where will you take it on your next adventure? Theodolite requires an iPhone or iPod touch (see the Theodolite HD app for use on iPad or iPad mini). Note: GPS and compass requires an iPhone. iPod touch devices do not have GPS or compass hardware.



  • Problem with IPhone Compass

    By ISXDesign
    I think the Theodolite app is very well designed. However, it relies on the compass in the iPhone 7 plus to be accurate. That's a big problem! All iPhone 7 plus phones have a worthless compass in them... I can't use the Theodolite app for anything real because all of the data that would need an accurate compass heading is wrong by incredible amounts. If you Google the compass issue on iPhone 7, you'll see everyone has pretty much the same issue and only Apple can fix it but they don't have much interest! So... Theodolite is good, maybe on other phones other than 7's... not useful on a 7 plus.
  • Amazing App for doing RF/Wireless Systems Engineering

    By SD116
    I have been using this app since it came out and it's probably the best app I have on my iPhone to assist with RF Engineering. It allows you to document site locations and then export to a .KMZ file which is incredibly effective way to do surveys and map out locations . It also allows you to get approximate azimuth and horizontal alignment information so that when it's time to install the equipment you will have that information ready to go. I have never had any problems with it and it's with EVERY PENNY.
  • Dig it -- great app!

    By Alfonso Faustino
    I really dig this awesome app. I do a lot of hiking and climbing in the Sierra Nevada, and the app's data is useful for me. The Developer, Craig Hunter, is responsive and helpful with questions and concerns I had and responded to my emails in a timely manner. Wish-list: Date-Stamp in the screen-shot mode. Thanks for the great work in developing this app! Check 6! /s/ Alfonso Faustino
  • No updated

    By tomfergy
    This must be the first perfect application that doesn't need updates to keep current with the iOS. No updates since 2015. One stars because I like the app but it needs to stay current with hardware and OS changes.
  • amazing altitude and location overlay

    By j0hnny0
    the overlay is simply awesome.
  • Love this app

    By Mountain Viewer
    Being able to take photos with annotation of azimuth and elevation is very helpful for understanding satellite dish setup issues. It's also just a lot of fun when traveling here in the Rockies.
  • Awesome

    By Seadog Sean
    Does everything.
  • Great App!

    By bobbydanger53
    Theodolite is a great app for just about any surveying, plotting, planning, and general information for building!
  • Fantastic App great back country treking

    By Transmaster
    Theodolite is so useful for mapping the locations of isolated Beaver ponds. Creeks and other back country fishing locations. Plus recording other locations like good camp grounds with photo's, and Being able to send a photo with location info is icing on the cake. If you have a cell connection this app could be a life saver, to be able to send out accurate coordinates with a photograph of your location. Will you get help just that much faster. This just scratches the surface of what you can do with Theodolite.
  • Theodolite

    By Staaleson Engineering
    Very useful. Excellent. I use this app on every site visit to record date, time, azimuth, lat/long on a photo of the front of the building. Good practice for all SCA. Necessary for structural condition assessments for insurance companies or for litigation.