What do you think of this idea?

I think this could be a good idea, signed up for early access .

I've built ROI calculators at 3-4 companies now. At the bigger ones, I wouldn't use this tool just because we need full control over the experience, but for smaller teams, this would work well.

I think the landing page design could use some work and definitely a screenshot, or even better, a live example of a calculator.

Some potential audience targets:

• Marketing teams - build ROI calculators as well as interactive assessments (like a calculator but doesn't return numbers, returns a category/grade/score).
• Sales - build custom calculators to close deals, without engineering help.
• Real estate - just an idea, but for example allowing real estate agents to send a calculator to clients that they can use to calculate closing fees, cost per square foot etc.

Good luck on the indie hacker journey!