GeoSenEsm offers a ready mobile application for Android and iPhones and simple DYI setup instructions for server side admin portal. The application is shared under MIT license and is free to use. Study administrators install server side admin portal on their own server allowing them to retain independence and full control over data and study design.
Project repository: https://github.com/geosenesm
Project user guide: User Guide
GeoSenEsm is a tool developed for research using Experience Sampling Method.