SHAppE After One Year: Community Feedback Driving Seismic Hazard Analysis Forward

SHAppE (Seismic HAzard Parameters Evaluation app) is a MATLAB-based App for time-dependent probabilistic seismic hazard analysis, designed to simplify data access, analysis and visualization workflows. Since its release in April 2025, SHAppE has been well received by researchers and educators, providing an intuitive interface for complex hazard evaluations without requiring advanced programming skills. 

While the initial version was fully functional, community feedback over the past year has been invaluable in refining the app. Over the past year, more than 50 issues (including bug fixes, usability improvements, and feature enhancements) were addressed, many reported directly by users. This collaborative process has led to significant upgrades, such as improved data selection workflows, expanded parameter set options, and the ability to extract the complete set of custom filters and applied parameters, further strengthening reproducibility. 

SHAppE also integrates with external sources like the ISC Earthquake Toolbox for MATLAB, enabling direct access to global earthquake bulletins without significant preprocessing. The community contributions have been critical to the App improvement and we encourage continued feedback to drive future development.  

SHAppE is freely available via: 

• GitHub (https://github.com/mathworks/Seismic-HAzard-Parameters-Evaluation-Interface-SHAppE) and  

• File Exchange (https://www.mathworks.com/matlabcentral/fileexchange/180879-shappe-seismic-hazard-parameters-evaluation-interface)