Whether data is entered by sites, participants or clinicians, the questions are the same: how fast can you build, where does the data live, and what does it cost at your study size. Here is what to compare and where Capture fits.
Free sandbox · No credit card · 21 CFR Part 11 aligned
Patient-reported
Participant, own phone
Observer-reported
Caregiver
Clinician-reported
Site staff, clinic tablet
Performance outcome
Site-run test, e.g. chair rise
The short version
Why teams compare
Clinical trial data comes from several places: site staff entering visit data, clinicians rating scales, participants completing questionnaires at home. Some tools specialise in one of these; others combine them. The more systems involved, the more reconciliation, the more audit trails to review, and the more contracts to manage.
Capture handles clinician-reported outcomes as site forms, participant-reported outcomes on participants' own phones, and performance outcomes as site forms with units and range checks, all in the same study. See clinical outcome assessment types for how these fit together.
Many sites enter data into the EDC during or straight after the visit, with paper or electronic health records as the source. Define in your monitoring plan what the source is for each data point, so monitors know what to verify.

Criteria
| Criterion | Why it matters | Capture |
|---|---|---|
| Build ownership | Speed of builds and amendments | Your team builds; AI drafts visits and forms from the protocol |
| Clinician-rated scales | Rater data needs the same controls as site data | Site forms with permitted values, rater recorded, audit trail |
| Participant questionnaires | Device model and compliance | BYOD in the browser, reminders and windows |
| Data in one place | Reconciliation and audit burden | EDC, ePRO, eConsent and randomisation in one study |
| Monitoring | Verification effort | SDV per field, queries at entry, site risk monitor |
| Cost | Fit for your study size | Free sandbox; pay when you go live; no per-site fee |
In Capture
Sites enter visit data and clinician ratings on locked, approved forms with edit checks that raise queries at entry. Participants complete questionnaires on their own phones. Monitors verify the fields that matter, set per field, and every change is in one field-level audit trail.
Changed by Data manager · reason: critical safety value added
See your visits and forms drafted in the free sandbox.
Switching
The natural time to switch is between studies. Export your form specifications and instrument lists from the current system, and use them to draft the new study: Capture's AI can draft forms from an uploaded file or description for your review. Licensed instruments need licence holder approval for the new electronic version.
Keep historical data in its original export and merge it at analysis if needed, rather than migrating mid-study. See how to switch EDC vendors mid-study.
Source data
Wherever data is captured, sponsors must know what the source is. When sites enter data directly into the EDC during the visit, the eCRF itself can be the source for some data points; FDA has published guidance on electronic source data in clinical investigations. When data is transcribed from medical records, those records are the source.
Document the source for each data point in a source data agreement or the monitoring plan, so monitors know what to verify and where. SDV set per field then focuses verification on the data that matters. See source data verification.
Evaluating a shortlist
Compare how long a real build takes.
Check permitted values and attribution.
As a participant would.
Check the site workflow.
Codes, labels and data dictionary.
Set-up, per-site and per-participant costs.
For data entered directly during the visit it can be; document the source for each data point.
Yes. FDA has published guidance on electronic source data in clinical investigations.
Sponsors, CROs and academic teams comparing eCOA and site data capture options, including teams using or evaluating Clinical ink, who want to see a self-serve, unified option alongside it.
No. Vendors change their offerings, so we describe what to evaluate and where Capture fits. Confirm current capabilities and terms directly with Clinical ink.
Yes. The free sandbox has every feature with sample data, no credit card and no time limit.
Yes, as site forms with permitted values, the rater recorded and a field-level audit trail.
Yes. EDC, ePRO, eConsent and randomisation share one study and one audit trail.
Keep exploring
Build from your protocol in the free sandbox.