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Research · head to head

Castor EDC vs Remesh

Castor EDC logo

Castor EDC

Research

Electronic data capture and eConsent for clinical trials, built for investigator-initiated studies as well as sponsors

From
On request
Rated
-
Full reviewWebsite
Remesh logo

Remesh

Research

Live AI-moderated conversations with hundreds of participants at once, analysed in real time

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Castor EDC nothing is published: pricing is quoted only after a scoping call and protocol review, so budgeting a grant application means asking for a quote months before the study is funded and hoping the scope holds.; Remesh pricing is not published and third-party estimates put annual contracts in the tens of thousands of dollars, which puts it out of reach for teams that only run occasional qualitative studies and cannot commit to an annual platform fee.
  • They diverge on capability: Castor EDC covers Browser-based study build, Remesh covers Live moderated sessions.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Castor EDC and Remesh actually diverge.

Attributes where Castor EDC and Remesh differ
AttributeCastor EDCRemesh
PlatformsWeb, iOS, AndroidWeb, API

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Research).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Castor EDC

  • Browser-based study build
  • 21 CFR Part 11 workflows
  • eConsent
  • ePRO and surveys
  • Randomisation
  • Per-study licensing
  • Grant-funded pricing paths
  • Data export

Only in Remesh

  • Live moderated sessions
  • Collective dialogue
  • Flex asynchronous studies
  • Video research
  • Remy AI assistant
  • On-Demand Recruit
  • Real-time theme analysis
  • Practice sessions

What people use each for

The jobs each tool is most often brought in to do.

Castor EDC

  • An academic hospital running an investigator-initiated trial that cannot fund a sponsor-grade EDC contract or a data management CROnot Remesh
  • A medical device company collecting post-market clinical follow-up data with Part 11 audit trailsnot Remesh
  • A multi-site registry that needs remote eConsent because participants are recruited nationally rather than at a clinicnot Remesh
  • A biotech running a small phase two study that wants the database built by its own clinical team in weeks rather than commissionednot Remesh

Remesh

  • A brand team that needs to test three positioning statements with 400 target customers and know by the end of the day which one lands and with whomnot Castor EDC
  • An HR function running an employee listening session across several thousand staff where anonymity and volume both matternot Castor EDC
  • A public affairs team needing rapid citizen consultation on a policy option with evidence of how widely each objection is heldnot Castor EDC
  • An insights team that has to replace six focus groups with one session because fieldwork time has been cut and the decision cannot waitnot Castor EDC

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Castor EDC

  • Nothing is published: pricing is quoted only after a scoping call and protocol review, so budgeting a grant application means asking for a quote months before the study is funded and hoping the scope holds.
  • Price scales on protocol complexity rather than a simple unit, so two studies with the same participant count can be quoted very differently and there is no public benchmark to argue against.
  • Modules such as eConsent, ePRO and randomisation are quoted on top of the base platform, so the headline EDC figure is rarely the number that appears on the final proposal.
  • It is deliberately lighter than the full sponsor suites, so a study that grows into a global registrational programme needing integrated CTMS, safety, IRT and full trial supply management will need additional systems and the interfaces between them.
  • Regulatory responsibility does not transfer with the software: the platform supports Part 11 compliant workflows, but system validation for your intended use, SOPs and audit readiness remain your obligation and your cost, which sponsors new to EDC consistently underestimate.

Remesh

  • Pricing is not published and third-party estimates put annual contracts in the tens of thousands of dollars, which puts it out of reach for teams that only run occasional qualitative studies and cannot commit to an annual platform fee.
  • The public review picture is inconsistent in a way worth investigating: a small number of positive buyer reviews on G2 sit alongside a poor Trustpilot rating driven mostly by participant complaints, so ask directly how participants are recruited and compensated before running a study on your own customers.
  • Funding has slowed sharply, from a 25 million USD round in 2021 to a 4.25 million USD round in late 2022, so procurement teams at large organisations should expect to run a vendor viability review.
  • The collective dialogue mechanic rewards views that many participants recognise and vote for, which systematically under-weights genuinely novel minority insight, so it is a poor fit for exploratory discovery work where the outlier is the point.
  • The discussion guide builder, especially spreadsheet import, is reported as unreliable, and because sessions are live with recruited participants a tooling failure during setup is expensive rather than merely annoying.

Pricing, plan by plan

Castor EDC

On request
  • Castor EDC$undefined/year
    • Priced per study on protocol complexity, duration, sites and modules
    • 21 CFR Part 11 and ICH GCP workflows
    • eConsent, ePRO and randomisation modules quoted separately

Remesh

On request
  • Remesh$undefined/year
    • Live moderated sessions
    • Flex asynchronous studies
    • Video research

Which should you pick?

Choose Castor EDC if

  • You need browser-based study build.
  • You work on Web, iOS, Android.
  • You also want 21 cfr part 11 workflows.
Castor EDC review

Choose Remesh if

  • You need live moderated sessions.
  • You work on Web, API.
  • You also want collective dialogue.
Remesh review

Questions people ask

Is Castor EDC or Remesh better?
Neither clearly leads. Castor EDC starts at On request and Remesh at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Castor EDC or Remesh?
Castor EDC starts at On request and Remesh at On request.
Does Castor EDC or Remesh run on more platforms?
Castor EDC runs on Web, iOS, Android. Remesh runs on Web, API.
What is Castor EDC best used for?
Castor EDC is most often used for an academic hospital running an investigator-initiated trial that cannot fund a sponsor-grade edc contract or a data management cro, a medical device company collecting post-market clinical follow-up data with part 11 audit trails, a multi-site registry that needs remote econsent because participants are recruited nationally rather than at a clinic, a biotech running a small phase two study that wants the database built by its own clinical team in weeks rather than commissioned. Of those, an academic hospital running an investigator-initiated trial that cannot fund a sponsor-grade edc contract or a data management cro and a medical device company collecting post-market clinical follow-up data with part 11 audit trails are not what Remesh is typically brought in for.
What can Castor EDC do that Remesh cannot?
Castor EDC covers Browser-based study build, 21 CFR Part 11 workflows, eConsent, ePRO and surveys. Remesh covers Live moderated sessions, Collective dialogue, Flex asynchronous studies, Video research.

Answered from the vendors’ own pages

Castor EDC: Is there a free academic version?

No published free tier. There are academic, non-profit and grant-funded pricing paths, but each is quoted rather than self-service.

Remesh: How many people can join one session?

Sessions are designed for several hundred participants at once, which is the core reason to choose it over a conventional focus group.

Castor EDC: Is it 21 CFR Part 11 compliant?

It supports Part 11 compliant workflows with audit trails and electronic signatures. Validating the system for your specific use remains your responsibility.

Remesh: Does it publish pricing?

No. Contracts are quoted annually, typically scoped by session volume, and third-party estimates place them in the tens of thousands of dollars per year.

Castor EDC: Do I need a programmer to build a study?

No. Case report forms are configured in the browser, which is the main reason academic groups adopt it.

Remesh: Can it replace a survey?

Not entirely. It produces open-ended language with agreement percentages, which is stronger than a survey for understanding reasoning but weaker for precise population estimates.

Castor EDC: How long does a quote take?

Castor states a full pricing proposal within five business days of sharing the protocol.

Remesh: Does Remesh recruit participants for me?

Yes, through On-Demand Recruit, typically delivering a panel within about 24 hours, or you can bring your own list.

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