John Viveiros

John Viveiros

Co-founder @ GainWrk — AI for growth

Forums

John Viveiros

1mo ago

Revenue Calculator (by GainWrk) - A free calculator for contractors losing leads

Missed leads = missed jobs. GainWrk’s free Revenue Calculator shows service businesses (plumbers, electricians, HVAC, contractors, realtors, etc.) how much revenue they may be losing from missed leads. Enter your inbound leads/month, average job value, and % missed. Adjust assumptions if you want. Get an instant estimate and a clear “what this costs you” number.
Nika

2mo ago

How far can AI go, if it already partially helps shrink cancer tumors?

Yesterday, a report circulated on X-com about how an Australian entrepreneur used data and AI to design a custom mRNA cancer vaccine from scratch.

So what does this mean for us?

John Viveiros

2mo ago

Contractor Invoice Generator - Professional contractor invoices in seconds

Create professional contractor invoices in seconds with no sign-up required. Add your logo, enter line items, calculate tax automatically, and download a PDF or print instantly. Built for contractors, electricians, handymen, and other home service pros. This tool turns messy invoicing into something fast, simple, and professional. This wording matches the main functionality and audience shown on your product page.
Copusp/copusHanduo

2mo ago

What is one article or video that completely changed your perspective?

We all have that one piece of content an article, a talk, a thread that genuinely changed how we think about something.

For me it was "1,000 True Fans" by Kevin Kelly. The idea that you don't need millions of followers to build a sustainable creative career completely shifted how I think about building audiences. It is also one of the core ideas behind Copus helping people build real, engaged communities around the content they care about.

CY

2mo ago

What makes you click into a Product Hunt launch?

There are so many launches on Product Hunt every day. How do you decide which ones are worth clicking into?

What s your #1 filter or shortcut?

Nika

2mo ago

How do you decide what features should be free and what should be paid?

Let me start from the creator s perspective:
I personally don t have a product (apart from hiring people for creative work or offering personal consultations).

But as a creator, I constantly share content, insights, and information, value that helps me build trust (for free). Based on that perceived expertise, people eventually decide to work with me (a paid service).

John Viveiros

2mo ago

Free Business Card Creator - Free Business Card Creator—no account required

Built for contractors and service businesses who just need a clean business card fast! Add logos, change colors, different layout options, etc.