Yield101 is the lab-bench companion app for Reaction101: define your reaction components (reactants and products), and enter any quantity data you have available, which includes: stoichiometric equivalence, mass, volume, moles, density, and concentration. Yield101 will calculate the missing values when possible, and calculate the final percentage yield for products. Edit and view your reaction yield-scheme on your device, or email the data with a PDF attachment, print it directly, or share it online. Yield101 will automatically check each component structure for availability in the Mobile Reagents collection, and provides an easy way to browse them. By Molecular Materials Informatics, Inc.