Many large-scale coastal studies are limited in the United States because there is no national or global beach grain size database. SandSnap is a citizen science initiative designed to crowdsource grainsize data from images collected from a smartphone. Successfully processed images and sediment gradation results are stored on the website’s database that can be easily viewed and downloaded. The success of this project depends on the accuracy of the gradation measurement and the continued contribution of new samples. To increase the geographic extent of the database, the currency used in the web application for scaling has been expanded from US coins to include euros. The methods to identify common mistakes such as erroneous images being uploaded, debris and shell hash, and blurry images have been improved. Future improvements include the development of a phone app and new techniques to measure the sediment gradation with images of mixed sediment (gravel and sand), shell hash, and debris partially obscuring the view of the sediment. The new techniques being developed will continue to improve the accuracy of the results on the database. The increased accuracy coupled with the expansion of the spatially and temporally robust database allows for improved large-scale beach morphological studies, coastal vulnerability assessments, and provide more opportunities to beneficially use dredged sediment to support our coasts.