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Theodolite Free

Theodolite Free
Download on the AppStore Click here to request a review of this app

  • App Store Info


Based on a centuries-old astronomical instrument, Theodolite Free is a cool multi-function augmented reality app for the iPhone that serves as a compass, GPS, zoom scope, and two-axis inclinometer. Theodolite Free overlays real time information about position, altitude, bearing, and horizontal/vertical inclination on the iPhone’s live camera image, like an electronic viewfinder. Uses are endless, from land surveying to navigation, and the app is great for hiking, boating, hunting, golf, sports, sightseeing, and finding your way around.

Be sure to check out the more powerful Theodolite Pro (iPhone, iPod) and Theodolite HD (iPad) apps. These upgraded apps let you take geo-tagged camera images and screenshots directly from the app, with 2X and 4X digital zoom options. You can choose to stamp geographical data and custom notes directly on the saved image for later reference. View your current position on the built in map view, with standard, satellite, and hybrid modes, compass rose, and bearings. On compass-equipped devices, bearing is updated live on the map with both fixed view and world rotation. Finally, you can add and manage custom location markers on the map, and share them with other Theodolite users via SMS text message and e-mail.

Theodolite Pro and HD also have optical accelerometer/gyro calibration, a zero reference mode for angles, and a handy "A-B" calculator to compute height of landmarks, distance to landmarks, triangulate position, compute distance/heading between points, show relative angles between observations, and show points on the map. Theodolite Pro and HD also provide data logging, integration with the system-wide clipboard, e-mail data export with KML, mil compass readout, optical rangefinders (including a mil-based reticle), night vision lens filters, display of percent grade, and multiple position formats including MGRS and UTM. Theodolite Pro and HD are $3.99 on iTunes. Theodolite Pro has been the #1 selling US navigation app in the US and UK app stores numerous times.

Theodolite Free works on any iPhone, the iPad 2 and 3, and the 4th generation iPod Touch. GPS functionality requires an iPhone 3G, 3GS, 4, or 4S, or an iPad 3G/4G model. Compass functionality requires an iPhone 3GS, 4, or 4S, or iPad. On iPhone 4 and 4S, iPad 2 and 3, and iPod 4, data are augmented by the gyro. On iPhone 4 and 4S, and iPod 4, the app uses high res artwork for the Retina Display.

What's New in Version 2.7

Updated app to correspond to version 2.7 of Theodolite Pro and Theodolite HD.


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