Handyman calculator is one of the most useful apps for woodworkers. it contains all the necessary tools like calculation and conversion tools intended for handyman and woodworkers. you get simple unit conversions, fractional calculators, density calculators, arc length and rebar weight and more in this app.. Woodworking with the wood whisperer is a free application for iphone and android. it is available for free. it’s a great service for those who want to expand their knowledge. it includes easily accessible and easy to understand information for the novice..