What a useful app!
I have found the app to be great for my DIY projects. UK users will love the new currency feature just added. We can now use the good old British pound when reckoning costs. Not really that different from the dollar only more readable (when your used to seeing pounds and pence everyday). The calculators are very good and although it's easy to work out stuff for yourself on paper, it's really useful to be able to have it on your phone when you go to the DIY shop for your supplies. I've never had it crash on my iPhone 4s, and it's layout is very nice. Text is not too small to read and not too cluttered on the page. I also like the way you can change your units of measure on the fly and can mix and match if you like. I use both imperial and metric units depending on the job and how accurate I need to be. My only criticism is that the electrical section is a bit sparse, but when you consider that the app is worldwide, there would be too many standards to really add much more. Maybe current ratings for standard size cables? All in all, I think this app represents great value for money and that most DIY enthusiasts will find it useful at the very least.