RallyUp vs.
Zeffy 

Yes — Zeffy is $0 on every plan, and that model is funded by donor tips prompted at checkout across campaign types, with Zeffy saying “2 of 3 donors” leave one. So the fee does not disappear; it moves to your donors. RallyUp’s free plan also carries no platform fee, with optional donor tips, and RallyUp Donation Pages go one step further: no platform fee and no donor tipping required at all. If you would rather turn tipping off elsewhere on RallyUp, Flex pricing is component-based — 0% for Donation Pages, Peer-to-Peer and Livestreaming, 2.9% for events and store, 4.9% for auctions, crowdfunding and A-Thons, 6.9% for raffles and sweepstakes — with no contract or subscription.

It does, and they are capable: Zeffy runs online silent auctions, and its own documentation describes the auction feature as specifically designed for online silent auctions and not adapted for live auctions. RallyUp runs all three formats — online, silent, and auctioneer-led live bidding in the room — and adds Auction Gifts, where non-winning bidders pledge an optional gift that is charged only if they win nothing, which RallyUp reports raises 20–35% more. For organizers who choose RallyUp’s Flex plan and pay fees themselves, the auction platform fee is also capped at $100 per item, so a $50,000 winning bid costs $100.

Not as a dedicated format. Zeffy supports raffles, but a 50/50 runs as a regular raffle with a sales thermometer — there is no configurable split, and Zeffy states it “doesn’t have an automatic winner drawing tool.” RallyUp has Single-Prize, Multi-Prize, 50/50, and Enhanced 50/50 formats with your own split, such as 60/40, draws the winner automatically inside the platform, and shows the winner’s live prize total on the campaign page as entries sell. Rules for selling raffle entries vary by state and locality, so check your local guidance before you launch.

RallyUp runs the room, not just the form. Event Balances give each guest one tab across bids, gifts, and purchases that settles in a single charge, with line-free checkout that is instant or fully automatic, alongside auctioneer-led live auctions, Paddle Raise+, Fund-a-Need, and Live Display. Zeffy covers ticketing and check-in, and states its auction feature is not adapted for live auctions; paddle raise, a live room display, and a single per-guest tab are not documented. RallyUp event teams can also rehearse the whole night with volunteers in Power Preview before the campaign is published.

No — Zeffy states “we do not have a test mode.” RallyUp’s Power Preview is the opposite approach: on a draft campaign you run real test card transactions through actual checkout, place test bids on auction items, receive test receipts, and walk every Component flow, then all test data is deleted automatically when you publish. It is available on every RallyUp plan, including Free, with unlimited attempts, though only card transactions can be simulated today. That is also how Done-for-You customers sign off on a campaign a RallyUp expert built for them at Create My Campaign.

Zeffy runs one campaign type per campaign, and stacking multiple types on one page, one URL, and one checkout is not documented. RallyUp is built the other way around: 12+ Components — raffles, auctions, tickets, sweepstakes, crowdfunding, A-Thons, store, livestreaming, and donations — combine inside one fundraiser with a single checkout, and you can add a Component to a campaign that is already live without rebuilding it. Combining campaign types is how RallyUp organizations raise 38% more on average, and it means one URL to promote instead of several separate pages.