Research · head to head
Greenphire vs Zappi
Greenphire
Research
Clinical trial participant payments, reimbursement and travel, now part of Suvoda
- From
- On request
- Rated
- -
Zappi
Research
Automated consumer insights platform for testing advertising, product concepts and brand health
- From
- On request
- Rated
- -
The short version
- 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.; Zappi nothing is published: pricing is a platform subscription plus a prepaid credit bundle quoted per customer, so a buyer cannot benchmark the cost against agency research without going through sales.
- They diverge on capability: Greenphire covers ClinCard, Zappi covers Validated study templates.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Greenphire and Zappi actually diverge.
| Attribute | Greenphire | Zappi |
|---|---|---|
| Platforms | Web, iOS, Android | Web |
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 Greenphire
- ClinCard
- Direct to bank payment
- Expense reimbursement
- Travel and logistics
- Site payments
- Budgeting and benchmarking
- Tax handling
Only in Zappi
- Validated study templates
- Respondent panel access
- Normative benchmarks
- Creative testing
- Brand health tracking
- AI analysis over history
- Unlimited users
- Exports and integrations
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 Zappi
- A decentralised or hybrid trial where participants travel long distances and the sponsor funds flights and accommodationnot Zappi
- A trial in a population where slow reimbursement drives dropout and same day payment materially helps retentionnot Zappi
- A sponsor that wants site payment milestones and participant payments handled by one vendor rather than twonot Zappi
Zappi
- A beverage brand screening thirty flavour concepts before committing to two for consumer testingnot Greenphire
- A marketing team pre-testing three advertising edits in a day so a media booking deadline can be metnot Greenphire
- An insights function replacing repeated ad-hoc agency studies with a comparable, accumulating body of test resultsnot Greenphire
- A brand manager running continuous brand health tracking without negotiating a separate tracker contract each yearnot 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.
Zappi
- Nothing is published: pricing is a platform subscription plus a prepaid credit bundle quoted per customer, so a buyer cannot benchmark the cost against agency research without going through sales.
- Credits are prepaid against a forecast of the year ahead, which means a team that overestimates research volume ends the year having paid for studies it never ran.
- The template model that makes studies fast also constrains them; a research question that does not fit a validated instrument either gets forced into one or goes to an agency anyway.
- Normative benchmarks are strongest in fast-moving consumer goods categories where Zappi has depth, and thinner in business-to-business, financial services and niche categories, where the comparison numbers mean less.
- Because respondents come from Zappi-sourced panels, sample composition is a vendor decision rather than yours, and any team that needs a bespoke recruitment specification or a low-incidence audience will find the automated route unsuitable.
Pricing, plan by plan
Greenphire
On request- Greenphire Patient Payments$undefined/year
- Priced per study through a sales process
- Typically a platform fee plus per participant and per transaction charges
- Funding of the payment float is separate from the software fee
Zappi
On request- Premium$undefined/year
- Platform subscription with unlimited users
- Access to all research solutions
- Credit bundle scoped to annual research volume
- Enterprise$undefined/year
- Platform subscription with unlimited users
- Multi-market and global organisation controls
- Connected insights across markets and brands
Which should you pick?
Choose Greenphire if
- You need clincard.
- You work on Web, iOS, Android.
- You also want direct to bank payment.
Choose Zappi if
- You need validated study templates.
- You also want respondent panel access.
Questions people ask
- Is Greenphire or Zappi better?
- Neither clearly leads. Greenphire starts at On request and Zappi at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Greenphire or Zappi?
- Greenphire starts at On request and Zappi at On request.
- Does Greenphire or Zappi run on more platforms?
- Greenphire runs on Web, iOS, Android. Zappi runs on Web.
- 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 Zappi is typically brought in for.
- What can Greenphire do that Zappi cannot?
- Greenphire covers ClinCard, Direct to bank payment, Expense reimbursement, Travel and logistics. Zappi covers Validated study templates, Respondent panel access, Normative benchmarks, Creative testing.
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.
Zappi: Does Zappi publish prices?
No. It publishes the structure, a platform subscription plus credits plus optional services, but not the numbers.
Greenphire: What is ClinCard?
The reloadable debit card Greenphire issues to participants. Greenphire Patient Payments was formerly known as ClinCard.
Zappi: How fast do results come back?
Automated tests typically return within hours to a day, which is the main reason teams choose it over a commissioned study.
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.
Zappi: Do we still need an agency?
For standard concept, creative and brand tests, usually not. For bespoke methodologies and hard-to-reach audiences, yes.
Greenphire: Can it pay participants outside the United States?
Yes, in more than thirty currencies, but the available payment method depends on the country.
Zappi: Is there a per-seat charge?
No. Both published tiers include unlimited users; the variable cost is research credits.
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