We launched 4 days ago — here's what we learned about building 90+ free calculators

Hey everyone 👋

We launched CalcDocu on Product Hunt a few days ago — free calculators for legal, finance, real estate, and

health decisions. No signup walls.

Lesson learned: launch day timing matters a LOT more than we expected. We're still early but wanted to share

what we built:

- DUI cost calculator (state-specific)

- HELOC & mortgage calculators

- Paycheck take-home calculator

- Invoice maker for trades

If anyone has feedback on what's missing, or has launched on PH before and has tips for next time — would love to hear it. calcdocu.com