Making things in a small town in Korea. Camera apps selling in 175 countries, top 10 paid in π―π΅π°π·ππ°. Using AI to do the work of a team.
Gyeongsan, South Korea
Joined March 2024
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Shipped so far as a solo dev in a small town in Korea:
ZRcamera Pro, a paid camera app that hit #8 on the paid chart in Japan and Hong Kong
ZRframe, a free app that adds a shot-info card to photos
Tesseract, a 3D plaza of 600+ web worlds
What should I build next?
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What I did for Japan, the first market that picked up my camera app:
- put the App Store page into Japanese
- made a separate Japanese Threads account (and one for Taiwan)
- an AI agent helps me run both
It got to #8 on Japan's paid chart. Now trying English on here.
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Same riverside, same ordinary day, same iPhone.
1 is the original. Then Milktea, Cine Blue and Rust, looks from my camera app ZRcamera Pro.
A normal day doesn't have to look normal.
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Sometimes I wonder if selling apps still makes sense in the AI era.
I keep making them anyway. Mostly because it's fun, and secretly hoping for real revenue someday.
Solo devs, what keeps you building?
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Night walks with my own camera app.
All four shot on iPhone with ZRcamera Pro, the app I make as a solo dev in Korea.
Which one would you keep?
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made a second app, ZRframe. it puts a little card under your photo with the look name and the shot info
free, iphone only
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Tesseract went from 230 to 646 tiny 3D web worlds in 3 days.
Most are Korean, so there's now a bridge to a global field for worlds from everywhere else. 66 there so far.
If you're bored, come walk around. No signup.
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meta-portal.app
english is in settings. made a world yourself? drop it here, the global field needs more doors
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red light, wet road, gray sky
shot dozens of color chart photos tuning my camera app so scenes like this don't come out oversaturated
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The metaverse is dead in the US.
In Korea it came back as hundreds of tiny web worlds. Online temples, a cathedral you just sit in, a temple where people bow to the Nasdaq chart, a duck pond.
They were scattered everywhere, so I built one portal for all of them. 359 so far
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here it is, no signup: meta-portal.app
built one yourself? drop it below and I'll add a door
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Also got 13 free codes if anyone wants to try it and tell me what feels off. Just reply here and I'll DM you
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