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Nonprofits · head to head

OneCause vs Zeffy

OneCause logo

OneCause

Nonprofits

Event management and auction fundraising platform, now part of Bonterra

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: OneCause no transparent pricing published; all plans require contacting sales at 888-475-5214 or online form for custom quotes; Zeffy revenue model relies entirely on donor voluntary tips with no guaranteed income
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OneCause and Zeffy actually diverge.

Attributes where OneCause and Zeffy differ
AttributeOneCauseZeffy
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 OneCause

Nothing recorded that Zeffy does not also cover.

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.

OneCause

  • Managing ticketing, sponsorships, and registration for fundraising eventsnot Zeffy
  • Running silent and live auctions with mobile bidding capabilitiesnot Zeffy
  • Coordinating peer-to-peer fundraising campaigns like walks and runsnot Zeffy
  • Processing donations with gift matching and recurring contributionsnot Zeffy

Zeffy

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

Where each one falls short

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

OneCause

  • No transparent pricing published; all plans require contacting sales at 888-475-5214 or online form for custom quotes

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

OneCause

On request
  • Professional$undefined/mo
    • Foundational fundraising software
    • Ticketing, tables, sponsorships, auctions, donations
    • Suited for galas, luncheons, golf outings
  • Enterprise$undefined/mo
    • Large or multiple ticketed events
    • Event Ambassador Fundraising
    • Event Series
  • Nationals$undefined/mo
    • National organizations managing affiliate chapters
    • Organization Structure & Hierarchy
    • Event Templates

Zeffy

Free
  • Free ForeverFree
    • Unlimited donations
    • Ticketing
    • Memberships

Which should you pick?

Choose OneCause if

Nothing in the data separates OneCause from Zeffy on the points above - pick on price and on how each one feels to use.

OneCause 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 OneCause or Zeffy better?
Neither clearly leads. OneCause 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, OneCause or Zeffy?
Zeffy has a free tier; the other does not. Paid plans start at On request for OneCause and Free for Zeffy.
Does OneCause or Zeffy run on more platforms?
OneCause 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. OneCause starts at On request.
What is OneCause best used for?
OneCause is most often used for managing ticketing, sponsorships, and registration for fundraising events, running silent and live auctions with mobile bidding capabilities, coordinating peer-to-peer fundraising campaigns like walks and runs, processing donations with gift matching and recurring contributions. Of those, managing ticketing, sponsorships, and registration for fundraising events and running silent and live auctions with mobile bidding capabilities are not what Zeffy is typically brought in for.
What can OneCause do that Zeffy cannot?
Zeffy covers Donation forms, Event ticketing, Membership management, Peer-to-peer fundraising.

Answered from the vendors’ own pages

OneCause: How much does OneCause cost?

OneCause does not publish pricing online. All plans require a custom quote. Contact OneCause at 888-475-5214 or submit a request through their website for pricing information.

Source
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
OneCause: What pricing tiers does OneCause offer?

OneCause offers three main tiers: Professional (foundational fundraising software), Enterprise (large/multiple event management), and Nationals (national organizations with affiliate chapters). All require custom quotes.

Source
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
OneCause: Is there a Pay As You Go option?

OneCause indicates Pay As You Go availability is offered within the Professional plan, but specific costs require contact with sales.

Source
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
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