As the PERMA DPW specialist, I use many tools when reviewing the safety of a member location, including several smartphone applications. These apps assist me in estimating decibel levels, heat stress, and ladder angles. You might find them useful as well.
Tool Box Talks, from the Construction Center for Excellence
While good for estimation, please remember that smartphone apps are not infallible. Properly calibrated measurement equipment should be used for record keeping purposes, or if any estimation causes concern.
– Ed Starowicz, public works risk management specialist