I Built 85+ Free Financial Calculators for Gig Workers — Here's What I Learned

The metricapp — Fri, 17 Jul 2026 17:02:50 +0000

If you drive for DoorDash, sell on Amazon FBA, or work
as a 1099 contractor — tax season is a nightmare.

I noticed there were no free, simple calculators
specifically built for gig workers. Every tool was either
paywalled, confusing, or built for accountants.

So I built TheMetricApp.

What I Built

85+ free financial calculators targeting:

DoorDash & Uber Eats drivers
Amazon FBA & Etsy sellers
1099 contractors & freelancers
TikTok Shop merchants

All calculators are 100% free. No signup. No paywall.

Tech Stack

Next.js 14
Tailwind CSS
Deployed on Vercel

What I Learned

Niche beats general
"Tax calculator" has insane competition.
"DoorDash tax estimator" has real users with a
specific problem. Go niche.
Speed matters
Gig workers check their earnings on mobile,
between deliveries. Every calculator had to load
fast and work on small screens.
SEO from day one
Each calculator targets a specific keyword.
Building in Next.js made this easy with
server-side rendering.

Try It

👉 https://themetricapp.com

The DoorDash Tax Estimator is the most popular —
try it if you're a gig worker or building something
similar.

Would love feedback from the dev community!

DEV Community: The metricapp

I Built 85+ Free Financial Calculators for Gig Workers — Here's What I Learned