Experiment vs PledgeBox Comparison 2026
Both cover crowdfunding. Here is what separates them on price, billing, what you can take with you, and coverage.
At a glance
- Both have a genuinely free tier.
- PledgeBox takes 3% of what you earn against Experiment's 8%.
Side by side
Experiment | PledgeBox | |
|---|---|---|
| Starting price | Free | Free |
| Pricing model | Free | Free |
| Free tier | Yes | Yes |
| Billing | Usage-based | Usage-based |
| Free trial | Not stated | Not stated |
| API | Not stated | Not stated |
| Data export | Not stated | Not stated |
Shaded rows are where the two answers disagree and both listings have answered. A row where one side has not stated a fact is left plain, because silence is not a difference.
Experiment
Crowdfunding for research projects
Experiment funds science: a researcher posts a hypothesis, a budget and a method, and backers pay for the work rather than for a product. Every project is reviewed by a person before it goes public, and funding is all or nothing, so a project that misses its number charges nobody. What backers get back is the result, usually a paper or a data set. Anybody looking for a reward tier will find this a strange place.
Our note
Set the goal at what the work actually needs rather than at an ambitious number, because all-or-nothing turns an over-ambitious target into no money at all. The 8 percent is at the high end for crowdfunding, and what buys it is a reviewed, credible platform that scientific backers already trust.
PledgeBox
Pledge manager for a funded campaign
PledgeBox handles what happens after a campaign funds: surveying backers for addresses and choices, selling add-ons, and producing the shipping list. It costs nothing unless the survey earns something, because the fee is a percentage of add-on sales rather than a subscription. Campaigns with no upsell pay nothing at all.
Our note
Free until there are add-ons to sell is the right shape for a first campaign, because the cost only arrives with the revenue. The 3 percent applies to add-on sales and not to what the campaign already raised, which is the distinction that makes it cheap.
Ratings are the average of reviews readers left. The facts are stated by each tool’s own listing and are not verified by CloutStack. How we make money.