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Nonprofits · head to head

Fluxx vs Zeffy

Fluxx logo

Fluxx

Nonprofits

Configurable grants management for foundations that run complex, multi-stage funding programmes

From
On request
Rated
-
Full reviewWebsite
Zeffy logo

Zeffy

Nonprofits

100% free fundraising platform for nonprofits

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Zeffy has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fluxx configuration flexibility means the system does very little until someone configures it, and foundations without a dedicated systems administrator end up paying the vendor or a partner for every change.; Zeffy revenue model relies entirely on donor voluntary tips with no guaranteed income
  • They diverge on capability: Fluxx covers Configurable data model, Zeffy covers Donation forms.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Fluxx and Zeffy actually diverge.

Attributes where Fluxx and Zeffy differ
AttributeFluxxZeffy
Starting priceOn requestFree
Pricing modelquotefree
Free tierNoYes
PlatformsWebWeb, IOS, Android
FoundedUnknown2019

Identical on both: user rating (Not yet rated), category (Nonprofits).

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 Fluxx

  • Configurable data model
  • Card-based interface
  • Multi-programme workflows
  • Board and committee review
  • Payment scheduling
  • Applicant portal

Only in Zeffy

  • Donation forms
  • Event ticketing
  • Membership management
  • Peer-to-peer fundraising
  • Recurring donations
  • Mailchimp
  • Zapier
  • Facebook

What people use each for

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

Fluxx

  • A foundation running six distinct funding programmes that each need their own application form, review panel and payment schedulenot Zeffy
  • A regranting intermediary administering funds for multiple donors who each require separate reportingnot Zeffy
  • A public agency distributing grant funds with statutory eligibility rules that must be enforced before an application can be submittednot Zeffy
  • A funder moving off spreadsheets and email after grant volume made manual board packet preparation unworkablenot Zeffy

Zeffy

  • Donation collection for nonprofitsnot Fluxx
  • Event ticketing with check-innot Fluxx
  • Membership sales with tiersnot Fluxx
  • Peer-to-peer fundraising campaignsnot Fluxx
  • In-person payment with Tap to Paynot Fluxx

Where each one falls short

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

Fluxx

  • Configuration flexibility means the system does very little until someone configures it, and foundations without a dedicated systems administrator end up paying the vendor or a partner for every change.
  • Implementation commonly runs four to eight months and is priced separately from the subscription, so first-year cost is far above the annual licence figure.
  • No pricing is published and quotes scale with assets under management, which means two foundations making the same number of grants can be quoted very differently.
  • The card-based interface is unfamiliar to new users and reviewer adoption suffers without training, which matters because trustees use it a few times a year and forget between meetings.
  • Reporting is capable but the report builder is technical, and many foundations end up exporting to a spreadsheet or a BI tool for board-ready output.

Zeffy

  • Revenue model relies entirely on donor voluntary tips with no guaranteed income
  • All features included equally with no upgrade path for additional capabilities

Pricing, plan by plan

Fluxx

On request
  • Fluxx Grantmaker$undefined/year
    • Configurable grantmaking workflows
    • Applicant portal and reviewer access
    • Priced by assets under management and grant volume
  • Fluxx Grantseeker$undefined/year
    • Free portal for applicants submitting to Fluxx funders
    • Tracks submissions and requirements across funders

Zeffy

Free
  • Free ForeverFree
    • Unlimited donations
    • Ticketing
    • Memberships

Which should you pick?

Choose Fluxx if

  • You need configurable data model.
  • You also want card-based interface.
Fluxx review

Choose Zeffy if

  • You need donation forms.
  • You want to start without paying.
  • You work on Web, IOS, Android.
  • You also want event ticketing.
Zeffy review

Questions people ask

Is Fluxx or Zeffy better?
Neither clearly leads. Fluxx starts at On request and Zeffy at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fluxx or Zeffy?
Zeffy has a free tier; the other does not. Paid plans start at On request for Fluxx and Free for Zeffy.
Does Fluxx or Zeffy run on more platforms?
Fluxx runs on Web. Zeffy runs on Web, IOS, Android.
Can I use Zeffy for free?
Yes. Zeffy has a free tier, so you can try it without paying. Fluxx starts at On request.
What is Fluxx best used for?
Fluxx is most often used for a foundation running six distinct funding programmes that each need their own application form, review panel and payment schedule, a regranting intermediary administering funds for multiple donors who each require separate reporting, a public agency distributing grant funds with statutory eligibility rules that must be enforced before an application can be submitted, a funder moving off spreadsheets and email after grant volume made manual board packet preparation unworkable. Of those, a foundation running six distinct funding programmes that each need their own application form, review panel and payment schedule and a regranting intermediary administering funds for multiple donors who each require separate reporting are not what Zeffy is typically brought in for.
What can Fluxx do that Zeffy cannot?
Fluxx covers Configurable data model, Card-based interface, Multi-programme workflows, Board and committee review. Zeffy covers Donation forms, Event ticketing, Membership management, Peer-to-peer fundraising.

Answered from the vendors’ own pages

Fluxx: Is Fluxx Grantseeker really free?

Yes, for applicants. It is the submission portal, and funders pay for Grantmaker.

Zeffy: How much does Zeffy cost for nonprofits?

Zeffy is completely free for nonprofits. There are no platform fees, transaction fees, credit card processing fees, monthly subscriptions, or setup costs. Nonprofits retain 100% of funds raised.

Source
Fluxx: How is Fluxx priced?

By quote, scaling with assets under management and grant volume. Implementation is a separate professional services fee.

Zeffy: How does Zeffy make money if it's free?

Zeffy relies on voluntary donor tips at checkout. On average, 2 out of 3 donors leave a tip. Tips are optional and donors can opt out, but Zeffy operates on this voluntary contribution model.

Source
Fluxx: Can we configure Fluxx ourselves?

Yes, that is the point of it. But it requires a trained internal administrator; foundations that do not appoint one become dependent on paid services.

Zeffy: What nonprofit organizations can use Zeffy?

Schools, churches, sports teams, animal rescues, food banks, volunteer fire departments, arts organizations, and PTAs can all use Zeffy. Over 100,000 nonprofits globally use the platform.

Source
Fluxx: How long does implementation take?

Typically four to eight months for a multi-programme funder, driven mostly by how long the foundation takes to agree its own process.

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