Custom by StartFourth
Not For Everyone.
Maybe For You.
custom by STARTFOURTH is our most exclusive offering — a white-glove project division reserved for entrepreneurs with a vision worth betting on.
Start a Conversation
A Different Kind
of Partnership
You don't need to be a StartFourth member to apply. You just need an idea we believe in.
We review every project personally. We ask questions. We push back. And when we decide to move forward together, we go all in — funding your entire project upfront, so you can focus on building instead of scrambling for capital.
Learn How It Works
What We Build
From software to physical products to entire business infrastructures.
App Development
Custom web and mobile applications built from the ground up.
Learn MoreProduct & Packaging Design
From concept to manufacturer-ready product.
Learn MoreFranchise & Licensing
Scale your proven business model nationwide.
Learn MoreMusic Label Launch
Build independent label infrastructure.
Learn MoreBespoke Lab
Unconventional ideas deserve unconventional execution. If it doesn't fit a category, it belongs here.
Learn MoreThe Financing
Every Custom Services project is financed through Rapids Funding GROW — our business financing program designed specifically for high-potential projects.
0% interest as long as payments are on time
Low biweekly payments starting as low as $49
No equity taken — ever
One Success Payment — due when your project proves itself
Who This Is For
Custom by StartFourth is for the entrepreneur who has stopped waiting for permission.
You don't need a track record. You don't need investors. You don't need to already be successful. You need a real idea, the drive to see it through, and the willingness to bet on yourself.
We'll bet on you too.
Ready to Start a Conversation?
Submit your project for review. Tell us what you're building. We'll take it from there.
Get Started