Downloading HUDCalc 1.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The most popular versions among the program users are 1.2 and 1.0.
Hudcalc.dmg is the most common filename for this application's installer. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this software for Mac is Morhelios. The unique identifier for this program's bundle is com.morhelios.hudcalc. The application lies within Productivity Tools, more precisely Calculators.
From the developer:
HudCalc is a Mac OS X Heads-Up Display (HUD) Calculator (Calc) designed to remain hovering over all windows while you work.
Have you ever used the built-in Mac OS X Calculator App and was frustrated when it hides behind other windows just when you needed it (except those who have a 27.5” iMac or 30” Cinema Displays where you have more room than you can manage!). HUDCalc will not do that.
You may want to check out more Mac applications, such as PinholeCalc, InstaRate or MiaPrintingCalculator, which might be related to HUDCalc.