THE PROBLEM
Fixed equity splits feel fair on day one — but they're based on promises, not reality. One founder goes all-in, another steps back. The split no longer reflects who built what.
Equity disputes are the #1 reason early-stage teams fall apart. Costartup solves this before it becomes a problem.
THE SOLUTION
Every hour worked, dollar invested, or asset contributed earns Grunt Fund Units (GFUs). Your equity percentage is simply your GFUs divided by the total pool.
As the team works, equity adjusts automatically. When you're ready to crystalize, you split based on what actually happened — not promises made at a coffee shop.
FEATURES
Hours, capital, and IP are weighted by risk multipliers. Equity updates live as your team works.
Cofounders verify each other's contributions. No one can inflate their equity unilaterally.
Share your team's page with investors and future hires. Show exactly how the company was built.
Invite cofounders by email. They set their role, rate, and commitment — everything in one place.
Find technical, business, or design cofounders. Filter by skill, domain, and availability.
Estimate splits before committing. Share the link and edit together in real time.
HOW IT WORKS
Create a team, invite cofounders by email. Everyone sets their role, hourly rate, and risk multiplier based on commitment level.
Log time, capital invested, or IP assets. Cofounders verify each other's entries — no self-inflation, full transparency.
GFUs accumulate in real time. Equity splits automatically based on what everyone has actually contributed — day by day.
The fairest way to split equity because it reflects actual contribution, not projections. If you put in more, you get more. Simple.