Premise of the study:ColectoR was developed to aid botanists in the collection of data for voucher specimens using smartphones, accelerating the process of data capture in situ and its subsequent organization.Methods and Results:ColectoR features a minimalist design that uses an intuitive iconic interface. The integration of external application programming interfaces (APIs) and an automated spreadsheet extends its functionality and increases the information and tools available to the user. This app is currently supported by any Android device.Conclusions:ColectoR provides an efficient method for capturing data in the field while also serving to organize the information into a coherent database, thereby greatly reducing the time required for postcapture data organization and label printing.