As a finish carpenter Ive used a CM calc for years. When I got an iPhone a few years back, I immediately looked to see if CI had made an app--I was sad to find they hadnt yet at that point. I used cheaper, less functional constr calc apps for a while, even contacted CI to request a real CM app. They said they were thinking about it. I waited and waited, and bought it when it first came out, using it regularly ever since. I was stoked to find it was very well done, not like so many junky apps out there. The iPad version is great now, also! And having the manual right there at all times makes it even more valuable than the dedicated calculators, not to mention if I have my phone I have my CM! I couldnt be happier!
Construction Master Pro, v1.2.0