Measure 3D Pro is described as 'Measure Length, Area and Volume of any shape in the real world, using augmented reality'. There are three alternatives to Measure 3D Pro for iPad and iPhone. The best alternative is Measure, which is free. Other great apps like Measure 3D Pro are TapMeasure (Free) and MeasureKit (Paid).
The Measure app uses augmented reality (AR) technology to turn your iOS device into a tape measure. You can quickly gauge the size of objects, automatically detect the dimensions of rectangular objects, and save a photo of the measurement for later.
Meet TapMeasure, the spatial utility that combines computer vision and AR, creating a whole new way to capture and measure your space. TapMeasure is the fastest, smartest way to measure a physical space.