But our tunes will probably change with the release of AR Measure™, an app that turns your phone into an accurate ruler. Using augmented reality, the app can calculate distances in 3D spaces ...

It uses a real ruler for calibration so it’s almost completely accurate once calibrated. The app asks for $1.99 for the ad-free version. You can also buy additional themes for $0.99 each or $5. ...

Until that day comes, we’ll just have to settle for steps beyond the wooden ruler — like the Kickstarter darling, the Rollova 2.0 Digital Ruler ($76.95, 13 percent off, from TNW Deals).