Study Trends is a Premium, personal, local-first analytics feature. It summarises anonymised observations to help you understand when studies tend to appear, how your filters perform, and which times may be worth your attention.
Open Study Trends
Open the StudyChime popup and select Study trends.
You can also open it through Settings:
- Open StudyChime Settings.
- Open Premium & trends.
- Select Open study trends.
What Trends records
Trend history is stored locally in your browser for up to 12 months. It is not uploaded to a community trends service or a server-side StudyChime study database.
Each local observation keeps only the values needed for the Trends calculations:
- first-seen timestamp
- reward and currency code
- hourly rate and currency code
- estimated completion time
- places available
- whether the study matched your filters
- whether a notification was sent
It does not keep study titles, researcher names, descriptions, URLs, or Prolific study IDs.
Views and date ranges
The page has two data modes:
- All — every unique study StudyChime saw
- Matched — unique studies that matched your filters, whether or not an alert was successfully sent
Choose 7 days, 30 days, 90 days, or 12 months from the centred date-range selector. 12 months is the default.
Insights shown
StudyChime can highlight a personal recommendation such as “Your strongest window is Tuesday, 10:00–13:00.” The page also shows:
- today’s unique-study count, the last-seven-days count, and total unique studies in the selected range
- average and median reward, shown separately for GBP and USD
- average and median hourly rate, shown separately for GBP and USD
- average completion time and places available
- filter match rate and the percentage of matched studies notified
- best weekday average, weekday/hour, two-hour weekday window, and three-hour weekday window
- separate GBP and USD pay distributions, plus completion-time distributions
- an hourly weekday heatmap
These are personal indicators based on what StudyChime saw while your open Prolific page was connected. They are not official Prolific statistics or guarantees about future availability.
StudyChime does not convert currencies. GBP and USD summaries and distribution graphs are calculated and displayed separately.
Use Trends when planning a schedule
The schedule editor estimates how many previously observed matched studies would have fallen inside proposed alert windows. It uses the local Trends history and shows the sample size. Treat it as a planning aid: earlier matches may have used a different profile and past availability does not predict future studies.
Export or import Trends data
Open Settings → Your data to export your anonymised Trends observations as CSV or import a StudyChime Trends CSV file.
Duplicate rows can make the imported count lower than the number of rows in the file. An invalid row or incorrect CSV structure causes the import to be rejected with an error.
The CSV does not contain study titles, researcher names, descriptions, URLs, or Prolific study IDs. Imported data remains local, anonymised, and subject to the same retention period of up to one year.
How sample strength works
The recommendation considers both the number of unique studies and how broadly they are spread across different days. Many studies collected in one hour or on one day are not treated as strong evidence.
- Early signal — fewer than 10 studies or fewer than 3 active days. Treat the recommendation as an initial hint.
- Building — fewer than 30 studies, fewer than 7 active days, or less than a 14-day calendar span. A pattern is forming, but more coverage will help.
- Useful — fewer than 100 studies, fewer than 21 active days, or less than a 30-day calendar span. The sample is useful for personal planning but can still change.
- Strong — at least 100 studies across at least 21 active days and at least 30 calendar days. This is a broad personal sample, not a guarantee.
Clear or lose local Trends data
Use Clear all trends to remove all locally stored Trends data.
Clearing Trends does not clear Milestone totals or unlocked Milestones. Those are stored separately and remain until you clear extension data or uninstall StudyChime; the non-sensitive JSON backup can preserve them.
Because Trends are local to a browser profile, they do not automatically follow you to another profile, computer, or device. Clearing extension data or uninstalling StudyChime normally removes them. If Premium access ends, retained history remains inaccessible until Premium access returns, unless you clear it or remove the extension.
Trends may be incomplete when the Prolific studies page was closed, you were signed out, StudyChime was disabled, Chrome or the computer was asleep, or local extension data was cleared.