Free tools

Quick answers for founders, no sign-up needed

Each calculator shows its formula. When you want the whole picture, build a full plan free: the same engine runs every number.

Lifetime-deal profit calculator

What a lifetime deal really leaves you after the marketplace share, refunds and years of serving users.

AI cost per user calculator

What each user costs you in AI every month, and how many months one lifetime sale pays for.

Runway calculator

How many months your cash lasts, and whether growth gets you to break-even first.

Break-even calculator

How many paying customers you need to cover your costs, and when you could get there.