Capture experienceas it actually happens.
High-fidelity data collection and analytics for scientific discovery — captured in the moment, on any device, anywhere in the world.
Backed by institutions that lead
Lead investor Elevate Ventures and Purdue University — a top U.S. research university — stand behind the platform.
Retrospective surveys measure memory, not experience
Ask participants to recall how they felt over the past week or month and the data is often distorted by recall bias — a patient with mostly mild pain reports a high weekly average because of one severe flare-up yesterday.
Ask after the fact
- Participants come into a lab or fill out a survey about how they felt last week — and the data is distorted by recall bias.
- Memory keeps the peaks and the endings: one severe flare-up yesterday becomes a high weekly average — the “peak–end rule.”
- Logbooks filled out from memory are burdensome, so compliance drops and the gaps get filled in after the fact.
Ask in the moment
- Participants report current thoughts, feelings, and behaviors right now, in their natural environment.
- Actual scores are logged in real time — an accurate timeline, not a memory distorted by a single bad day.
- Push notifications prompt immediate responses — frictionless, bite-sized tasks that keep compliance high without overwhelming anyone.
“The flexibility of the scheduling is what sold us. We could adapt the study on the fly, which was crucial for our longitudinal research. The data quality is top-notch.”
One platform for modern research
Collect rich, multi-modal data in real-world contexts — from surveys to sensors, built for the dynamic nature of your research.
Adaptive Mobile Surveys
Capture thoughts, feelings, and behaviors as they happen — sophisticated EMA/ESM surveys with branching logic, diverse question types, and flexible scheduling.
Wearable & Sensor Data
Add objective context to every self-report — activity, sleep, and physiology collected passively from smartphone sensors and wearables like Apple Watch and Fitbit.
Geofenced Triggers
Run geographically explicit EMA (gEMA) — surveys trigger the moment participants enter or leave a place, so in-clinic, campus, and community studies capture context on site.
Real-Time Analytics
Catch compliance dips before they become data gaps — monitor live, then view, filter, and export every data stream from one dashboard.
Cross-Platform
Participants respond in native iOS and Android apps — while your team watches every stream arrive live in the web dashboard.
Three steps to collect experiences
We’re researchers too — so we built ExpiWell to make experience sampling a breeze, and to democratize the method for everyone.
Create
- Build your surveys and select the sensor data to collect
- Schedule your surveys and notifications
- Launch your project in minutes
Schedule
- Participants download the free iOS & Android app and join
- Surveys and sensor data adapt to each time zone
- Notifications keep compliance high
Launch
- Track response rates in real time
- Send reminders and anonymized payments
- Voice & video auto-transcribed, then download
Data quality starts with the participant experience
Reach participants anywhere with seamless iOS and Android experiences that maximize compliance and ensure a consistent user journey — free native apps, available in 13 languages.
What our researchers are saying
From clinical trials to field studies, researchers around the world use ExpiWell to capture life as it’s lived. Here’s their work, in their words.
“ExpiWell is a GAME CHANGER for our research! It’s so easy to use, and the support team is always there to help. We were able to collect data from participants all over the world, and the results have been incredible.”
“Collecting multiple surveys from a small number of individuals is challenging. I chose to use ExpiWell because it makes this process easier by managing a timeline, automatically prompting participants to take surveys at predetermined times. ExpiWell is also ideal for confidentiality concerns, allowing researchers to communicate with participants through the platform without violating anonymity.”
“As a clinical researcher, I needed a platform that was flexible, reliable, and easy to implement. With ExpiWell, we were able to set up and deploy a JITAI-enabled study without requiring programming expertise. The system supported seamless participant engagement and real-time data collection, saving our team valuable time and resources.”
“As someone who isn’t a programmer, the no-code setup was a lifesaver. I designed and launched my entire ESM study in a single afternoon. Highly recommended for any researcher.”
Built to the highest standards
Continuously monitored and trusted by IRBs in medical and clinical settings. Your participants’ data is protected at every layer.
HIPAA Compliant
Built for Protected Health Information, with signed Business Associate Agreements (BAA), AES-256 encryption, and tamper-proof audit trails.
Monitored continuously via Vanta ››GDPR Compliant
Full EU data-residency control and consent management, so studies with European participants stay compliant by design — not as an afterthought.
EU & UK representatives appointed ››Web Accessibility
Every participant can take part, whatever their abilities — the platform follows W3C WCAG 2.1 guidelines at the AA level, monitored in partnership with accessiBe.
Partnered with accessiBe ››SOC 2 is underway. We’re working toward certification — once it’s independently verified, it will be listed here alongside the others, with its report linked.
ExpiWell’s platform and apps are HIPAA and GDPR compliant, with controls monitored continuously, and are trusted by IRBs in medical and clinical settings. We’ll even help walk you through the IRB process.
Before you start
Quick answers to what researchers ask most — method, compliance, devices, and cost.
Ecological Momentary Assessment (EMA) — also called the Experience Sampling Method (ESM) — collects real-time data on thoughts, emotions, and behaviors in people’s natural daily contexts. Because participants report in the moment rather than from memory, it eliminates the recall bias that distorts retrospective surveys.
Yes. The ExpiWell platform and apps are HIPAA and GDPR compliant, with controls monitored continuously, and are trusted by IRBs in medical and clinical settings. We help walk you through the IRB process and provide the verbiage you need.
No. ExpiWell is no-code. You can design, schedule, and launch basic or advanced EMA projects — including event-triggered surveys and JITAIs — without any programming.
Free native iOS and Android apps, plus GPS, Fitbit (activity and sleep), Apple Watch (steps and more), and BACTrack (alcohol behaviors).
The Basic plan is free — with unlimited participants, responses, and projects. Paid plans (Plus, Premium, and Sensor+) add scheduling, media, and sensor capabilities, each with a 7-day free trial, and graduate-student, short-term, and academic-department options are available. See the Subscriptions page for details.
Insights on experience research
Methods, guides, and the researchers pushing the field forward — straight from the ExpiWell team.
Elevate your research
Join over 7,000 researchers around the world and start collecting high-fidelity data today.