The Woodshop Widget, an iPhone and now iPad app has had an upgrade.
It is still one of very few woodworking based apps available, and joins an even more select group being able to work natively on the iPad.
A timber comparison, comparing gravity, hardness, tangential and radial shrinkage. The last two is particularly useful when making items combining different types of timber, so assist avoiding splits caused by seasonal movement.
Available from the Apple app store. Costs around a whole $4 or so.
Woodshop Widget Website