In celebration of the 40th anniversary of the Americans with Disabilities Act, the R2D2 Center has released the AccessRatings for Buildings MiniTools apps that include AccessRuler, AccessSlope and AccessSound. AccessRuler can be downloaded on iPhones or iPads. AccessSlope is an app that allows users to measure the degrees, percent increase, and vertical:horizontal ratio of any ramp. The four measures comprise the run and cross slopes of the ramp and landing, requiring only 3 seconds to record each measurement. The app depicts the accessibility of a ramp following the measurement on a scale that indicates whether the slope is accessible or not. In addition, users can add comments, save their measurements to a list within the app and export the measurements through email.