[This tweet from Marco Arment](http://twitter.com/marcoarment/status/222755117840089089), reminded me just how much I love and use Soulver. Without any exaggeration I use Soulver everyday that I am at my Mac. It is so good that I bought a second copy from the Mac App Store when I setup the retina MacBook Pro.
Surprisingly the app is only $11.99 on the app store — it’s worth at least twice that. If you [buy the iOS version (and you should) for $2.99](http://itunes.apple.com/us/app/soulver-notepad-calculator/id348142037?mt=8) then iCloud will sync your calculations back and forth.
Soulver is a bit more than your normal calculator, it’s almost like having an Excel scratchpad handy — without all the Microsoft junk that comes with excel.
If you are reading this, you know I don’t normally gush about apps, but I *love* this app.