| Participant | A person enrolled in an experiment. |
| Experiment | The entirety of Cozie usage for a research project. This includes planning, watch survey development, IRB (drafting, submission, approval), testing, debugging, advertising, hardware management, participant management, onboarding, offboarding, data monitoring, data analysis |
| Deployment | The use of the Cozie app with a tested watch survey with participants, including data monitoring. |
| Cohort | A group of Cozie users |
| Watch survey | Survey on the Apple Watch. Sometimes also referred to as micro environmental momentary assessment (μEMA) |
| Micro survey | Synonym for watch survey |
| Question flow | The structure of follow-up questions in a watch survey. It is often a flow chart. |
| Phone survey | A browser-based survey that can be opened from within the Cozie app |
| Reminder | Message on the phone that reminds participants to take a watch survey or a phone survey. Reminders look like push notifications. |
| Push notification | A pop-up notification sent to the Cozie app. |
| Onboarding | The process of enrolling a participant in an experiment. |
| Offboarding | The process of removing a participant from an experiment. |