Story of a 16 year old that built a popular side project that become worth some good cash

Panther28 · 2026-10-07T15:23:20+0100

This 16 year old didn't even make much effort, but he made a long term consistant focused one project effort.

Started at 16 because everything good was blocked at school. Four years later it was doing 150,000 daily users and sold for $120,000.

https://maddoxschmidlkofer.com/projects/duckmath

Anyone familiar with the duckmath site?

KernelWave · 2026-10-07T15:35:55+0100

complete crap

Panther28 · 2026-10-07T15:59:43+0100

KernelWave said:
complete crap

Your just jelly. Have a cake.

HenryObi · 2026-10-07T17:14:29+0100

Panther28 said:
This 16 year old didn't even make much effort, but he made a long term consistant focused one project effort.

View attachment 550851

https://maddoxschmidlkofer.com/projects/duckmath

Anyone familiar with the duckmath site?

Why was it sold for less than the annual revenue?

Panther28 · 2026-10-07T17:16:36+0100

HenryObi said:
Why was it sold for less than the annual revenue?

At the time DuckMath was pulling $15,000-$20,000 per month in ad revenue. Selling wasn't about the money running out - it was about wanting to move on. The unblocked games space wasn't where I wanted to build long-term. I had bigger ideas.

Lifeisnotgood · 2026-10-07T17:27:48+0100

Good success story!
120K I would invest in stocks and then no work... or if work then minimal.

It seems he has different projects too going on in his mainpage: https://maddoxschmidlkofer.com/
I think this is a good way to show things.
I think I do something similar. This is the branding that is necessary in this world so that you will stand out in some way.

Story of a 16 year old that built a popular side project that become worth some good cash

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