# Experience Sampling Method [ExperienceSampler](http://www.experiencesampler.com/) - An open source esm project composed of an iOS and Android app plus a self-hosted server app [Experience Sampling Method](https://en.wikipedia.org/wiki/Experience_sampling_method) #article - “The experience sampling method, also referred to as a daily diary method, or ecological momentary assessment (EMA), is an intensive longitudinal research methodology that involves asking participants to report on their thoughts, feelings, behaviors, and/or environment on multiple occasions over time.” [Expimetrics](https://app.expimetrics.com/) - “Experience sampling. Redefined. A smarter, simpler way to collect data.” [LifeData](https://www.lifedatacorp.com/) - Expensive. “Real-Time Patient Data. Real-Life Solutions.” [iHabit](http://emaresearch.org/ihabit/) #software - iOS app [Ilumivu](https://ilumivu.com/) - Expensive. “Are you an academic researcher or mental health counselor? Looking for an easy way to deliver mobile behavioral health interventions or run Ecological Momentary Assessment studies? The ilumivu Patient Engagement system is used by researchers and clinicians looking for an affordable system to monitor patient progress and provide just-in-time intervention.” [Movisens](https://www.movisens.com/en/) - “movisens provides ambulatory assessment and mobile monitoring products and services for science and research” [PACO](https://play.google.com/store/apps/details?id=com.pacoapp.paco) - "The Personal Analytics Companion" [PIEL Survey](https://pielsurvey.org/) #software - iOS app [SurveySignal](http://www.surveysignal.com/) - “SurveySignal is a powerful Survey Data Collection, Distribution & Management application. Conduct Survey Research (e.g. Experience Sampling) Using People's Own Smartphones!” --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://brain.nathanarthur.com/quantified-self/experience-sampling-method.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.