ProjectorCalc

I used this app years ago with a previous iOS. It seems they recently upgraded it, and I couldn't be happier. For anyone doing large or small scale 3-D projection mapping projects, this app is simply the best out there. It isn't perfect and there is room for improvement - but this is the most versatile, simple, and helpful tool out there. Provides fast, accurate, and even off axis calculations. I have programmed entire projection festivals using this one tool. Pretty amazing! A big thank you to the developers!

For rest-of-the-world users it would be great to have this localized to metric system units. I find it a bit annoying to have to write down the results and convert them to meters! That's what it needs to be a 5 stars app.

Just like LightCalc, ProjectorCalc is essential for calculating projector throws and projected image sizes on the fly. In all my tests the results have been spot on. I love how the keystone on the "Calculations" page changes in relation to the input data. It's a simple app that is well worth the price. It's an essential for anyone dealing with projectors.