Clinicians are increasingly using genomic technologies to determine the molecular basis of presenting conditions, identify increased risk factors or guide treatment (Deciphering Developmental Disorders Study, 2015). Unfortunately, however, the bioinformatic terms and acronyms that are frequently used in the new field of Clinical Genomics (the study of all genes simultaneously, rather than of individual genes as in Clinical Genetics) can often be unfamiliar to many health professionals (Institute of Medicine Roundtable on Translating Genomic-Based Research for Health, 2015). These include clinicians who, increasingly, need to be able to accurately interpret clinical genomics-related laboratory reports and to understand genomics research papers and seminars. This is in addition to the requirement for these individuals to participate in discussions with genetics lab scientists and, on occasion, bioinformaticians. Unfortunately, online information can be unhelpful as the genomics definitions provided on the internet are often written for readers with much previous genomics-related knowledge. Excellent online summaries of genetic conditions and of standard genetics terms are available via GeneReviews (http://www.ncbi.nlm.nih.gov/books/NBK1116/), UpToDate (http://www.uptodate.com/home) and the National Human Genome Research Institute (https://www.genome.gov). These sources, however, currently do not provide explanations of many of the technical terms that relate to the field of genomics. Moreover, mobile internet access can be intermittent or slow, for instance, on public transport in the UK. A self-contained mobile app (application), in contrast, can provide a user-friendly, rapid and accessible alternative information source with its customized contained information being available offline. Furthermore, a high proportion of professionals and postgraduate students now use Apple (iOS), Android or Windows smartphones (Sandholzer et al., 2015, Payne et al., 2012). 1.1. Objectives The objective was primarily to provide a concise bioinformatics dictionary for clinicians that is easy to access and to understand. Specifically, the aim was to create a smartphone app containing a small glossary of commonly used (but often unfamiliar) genomics terms (eg “FASTQ” and “PED file”) that would be user-friendly, easily accessible, self-contained and accompanied by illustrated explanations. The app containing this information would, ideally, be capable of running on Android or iOS portable devices and on a PC. An additional objective was to create an interactive quiz as a self-assessment system to test the learning of this information, with a personal points score. Currently, no similar electronic mobile self-contained glossary exists that covers the highly specialized terms used in clinical genomics.