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Research · head to head

Greenphire vs GWI

Greenphire logo

Greenphire

Research

Clinical trial participant payments, reimbursement and travel, now part of Suvoda

From
On request
Rated
-
Full reviewWebsite
GWI logo

GWI

Research

Access human insights and consumer insights from real people, instantly

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only GWI has a free tier, so it costs nothing to try first.
  • Each has a real cost: Greenphire the standalone greenphire.com site now redirects to Suvoda and the brands have been integrated, so buyers are contracting with a randomisation and supply vendor and should expect cross selling rather than an independent payments specialist.; GWI teams and Pro pricing requires contacting sales; no published rates for higher tiers
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Greenphire and GWI actually diverge.

Attributes where Greenphire and GWI differ
AttributeGreenphireGWI
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWeb, iOS, AndroidWeb

Identical on both: 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 Greenphire

  • ClinCard
  • Direct to bank payment
  • Expense reimbursement
  • Travel and logistics
  • Site payments
  • Budgeting and benchmarking
  • Tax handling

Only in GWI

Nothing recorded that Greenphire does not also cover.

What people use each for

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

Greenphire

  • A global Phase III trial paying stipends across many countries where participants cannot practically be reimbursed by sponsor accounts payablenot GWI
  • A decentralised or hybrid trial where participants travel long distances and the sponsor funds flights and accommodationnot GWI
  • A trial in a population where slow reimbursement drives dropout and same day payment materially helps retentionnot GWI
  • A sponsor that wants site payment milestones and participant payments handled by one vendor rather than twonot GWI

GWI

  • Supporting agency pitches with audience datanot Greenphire
  • Selecting media channels with demographic insightsnot Greenphire
  • Developing content strategies with consumer researchnot Greenphire
  • Validating partnerships with market datanot Greenphire

Where each one falls short

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

Greenphire

  • The standalone greenphire.com site now redirects to Suvoda and the brands have been integrated, so buyers are contracting with a randomisation and supply vendor and should expect cross selling rather than an independent payments specialist.
  • Nothing is published on price, and the typical shape of a platform fee plus per participant and per transaction charges means the cost of a trial is not knowable until enrolment is known.
  • Payment method availability varies sharply by country, so a global protocol may end up with card payments in some regions and slow manual processes in others, which undermines the retention argument that justified the purchase.
  • Sites bear the administrative work of enrolling participants and triggering payments but are not the buyer, so adoption depends on the sponsor mandating it and site resistance is a real implementation risk.
  • Participant payments create tax reporting obligations that differ per jurisdiction, and the tooling helps but does not remove sponsor liability, so legal and finance review is required in every country the trial runs in.

GWI

  • Teams and Pro pricing requires contacting sales; no published rates for higher tiers
  • Enterprise solutions and custom datasets require separate consultation

Pricing, plan by plan

Greenphire

On request
  • Greenphire Patient Payments$undefined/year
    • Priced per study through a sales process
    • Typically a platform fee plus per participant and per transaction charges
    • Funding of the payment float is separate from the software fee

GWI

Free
  • FreeFree
    • 10 Agent Spark prompts monthly
    • Unlimited GWI Canvas decks
    • Chart generation
  • Plus$150/month
    • Unlimited Agent Spark prompts
    • Save and export charts
    • Unlimited GWI Canvas decks
  • Teams$null/month
    • Custom pricing
    • All Plus features
    • Access shared dashboards
  • Pro$null/month
    • Custom pricing
    • All Plus features
    • Unlimited platform access

Which should you pick?

Choose Greenphire if

  • You need clincard.
  • You work on Web, iOS, Android.
  • You also want direct to bank payment.
Greenphire review

Choose GWI if

  • You want to start without paying.
GWI review

Questions people ask

Is Greenphire or GWI better?
Neither clearly leads. Greenphire starts at On request and GWI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Greenphire or GWI?
GWI has a free tier; the other does not. Paid plans start at On request for Greenphire and Free for GWI.
Does Greenphire or GWI run on more platforms?
Greenphire runs on Web, iOS, Android. GWI runs on Web.
Can I use GWI for free?
Yes. GWI has a free tier, so you can try it without paying. Greenphire starts at On request.
What is Greenphire best used for?
Greenphire is most often used for a global phase iii trial paying stipends across many countries where participants cannot practically be reimbursed by sponsor accounts payable, a decentralised or hybrid trial where participants travel long distances and the sponsor funds flights and accommodation, a trial in a population where slow reimbursement drives dropout and same day payment materially helps retention, a sponsor that wants site payment milestones and participant payments handled by one vendor rather than two. Of those, a global phase iii trial paying stipends across many countries where participants cannot practically be reimbursed by sponsor accounts payable and a decentralised or hybrid trial where participants travel long distances and the sponsor funds flights and accommodation are not what GWI is typically brought in for.
What can Greenphire do that GWI cannot?
Greenphire covers ClinCard, Direct to bank payment, Expense reimbursement, Travel and logistics.

Answered from the vendors’ own pages

Greenphire: Is Greenphire still sold?

Yes, as Greenphire Patient Payments on the Suvoda platform. The independent website and social presence have been consolidated into Suvoda.

GWI: Is there a free GWI plan?

Yes, GWI offers a free tier with 10 Agent Spark prompts monthly and unlimited GWI Canvas decks.

Source
Greenphire: What is ClinCard?

The reloadable debit card Greenphire issues to participants. Greenphire Patient Payments was formerly known as ClinCard.

GWI: What is the difference between GWI Plus, Teams, and Pro?

Plus costs $150/user/month with unlimited prompts and 50K profiling points. Teams is custom-priced with all Plus features plus shared dashboards and multi-user discounts. Pro is custom-priced with unlimited access, up to 250K profiling points, and advanced research tools.

Source
Greenphire: Does it publish pricing?

No. Pricing is per study and quoted through sales, and funding the payments themselves is separate from the software fee.

GWI: How much does GWI charge for annual billing?

GWI offers a 15% discount for annual commitments. Plus annual pricing is $1,500/user annually (equivalent to $125/user/month).

Source
Greenphire: Can it pay participants outside the United States?

Yes, in more than thirty currencies, but the available payment method depends on the country.

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