Hell everyone, A new member here. I have been using Palm PDA for last few years (currently own a Zire 71) and I use Parens calculator http://www.palmblvd.com/software/pc/Parens-1999-08-27-palm-pc.html very often for work. I'm considering to purchase an iPod touch, but I have to have a calculator program like Parens. It's not a typical scientific calculator that only includes Sin, Cos functions but also has many conversions such as length, weight, logic, volume, temperature, area, etc. Does anyone know if there is a calculator program like Parens? I tried contacting the person who wrote Parens, Rick Huebner, but wasn't successful. Thanks in advance.