First of all let's specify there are different kinds/models of crowdfunding platforms for business. There are reward based ones like Kickstarter/Indiegogo, and these are usually used as sort of pre-selling platforms; it seems it's not at all your case! There are, instead, equity crowdfunding platforms, that probably match with what you need. Some examples are EarlyShares, Crowdcube, Fundable or maybe Angelist too can fit very well for your startup, even though it's not exactly a crowdfunding platform, but I'd say better a crowdsourcing platform. In each case, still, you'll have to deal with VCs and investors, and satisfy their questions and requirements. What changes, mostly, is that you can get a higher audience. If, instead, you're looking for revenue shares platforms, I reviewed about 400 international platforms, and I looked a lot for one like this, but no one is really working with real revenue shares model (and probably it's not at all easy to do!). In case you need to dig in more, I'd be glad to set a quick call. All the best!