Excellent app. I build LED video walls, and when we have a curved wall, I need to be able to quickly determine what the footprint is going to be. With this app, I can punch in just the length of my Arc and the angle, and not worry about figuring out the radius, sine, cosine, and versine. My gear is in metric but my staff uses feet and inches, so I can easily combine and switch the parameters based on what I need without doing manual conversions. Extremely useful.

I found this app from Roseller's Handymath website which I found to be a perfect website with a comprehensive selection of calculators using a clean consistent presentation … this is very important to me … it's clean, clean, clean, and simple! After looking at, trying and being unimpressed with other calculator apps from other people, I really would love to get all of Roseller's calculators in one app.

I found this calculator through Google. I needed to find the depth of plunge of a V-Bit in a solid cylinder. Sunga's calculator saved me endless hours of math (which I had already attempted & failed).!This is definitely what I needed since the diameter of the cylinders will change with each project I am doing. Now I have the app on my iphone & can make the calculations at the CNC Machine. Thanks for making my life easier.

I recently wrote a review about the app being hard to read when in dark mode. The developer got in contact with me that same day to try and figure out the problem. About a week later he contacted me to inform me that it was fixed! It works perfectly now. It’s a great app with great customer service!