UPGRADE TO TG PRO FOR FREE AFTER PURCHASING AND RUNNING ONCE - download at http://tunabelly.com/tgupdate. FAN CONTROL AND NEW FEATURES ARE ONLY AVAILABLE AFTER UPGRADING FOR FREE TO TGPRO. We are no longer allowed to update on the Mac App Store which is why we're offering the free switch to TG Pro after purchasing. Take a look at what's going on inside your Mac with TG Pro - no other app shows more temperature sensors or has as many options for notifications and fan speeds. Find out which components are getting hot (and potentially overheating), turn up the fan speeds to cool down your Mac, get notifications for temperature alerts along with many other fantastic features. Plus, see if any sensors or fans are defective with the built-in hardware diagnostics.