chosk's profile on Product Hunt

About

I'm an indie iOS developer and founder of XTI Corp in Seoul, building privacy-first apps and tools. Right now: • SoomRun: A distraction-free running app to race yesterday's you with no leaderboard • One Line: On-device auto-sorting capture app (notes, to-dos, events) without AI in the loop • DuoVault: End-to-end encrypted photo vault for exactly two people • EXCRAPER: No-code social data extraction platform Before making my own things I worked on mapping & street-level imagery at Kakao Map. I read every comment on my launches. If something guesses wrong or breaks on you, tell me and I'll fix it!

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Tastemaker

Gone streaking

Gone streaking 5

Maker History

SoomRunRace yesterday's you. A running app with no leaderboard
Sep 2026
One LineWrite a line anywhere on iPhone — it sorts itself
Sep 2026
DuoVaultA private photo vault that becomes a shared one, for two
Sep 2026
EXCRAPERScrape YouTube & Instagram data in minutes, no code needed
May 2026

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Joined Product HuntMay 24th, 2026

Forums

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1mo ago

SoomRun - Race yesterday's you. A running app with no leaderboard

Most running apps rank you against strangers. SoomRun has no leaderboard: your one rival is the you from yesterday. It replays a past run at the exact pace you ran it and shows a single number, how many metres you're ahead or behind. One tap on the wrist when you pull ahead, two when you get caught. Import old runs from Apple Health on day one. Apple Watch works alone and merges later. No feed, no followers, no analytics SDK. Free; SOOM+ adds a goal-pace ghost.

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2mo ago

One Line - Write a line anywhere on iPhone — it sorts itself

Type "dentist tomorrow 3pm" and it becomes an event. "call mom" becomes a to-do. Everything else stays a note. Three screens — Today, Notes, Calendar — and one box to write in. Built for capture on iOS: home and lock screen widgets, share sheet from any app, reminders, dictation, and text lifted out of screenshots. The sorting is a dictionary and a date parser, not an AI. It runs on device, and nothing leaves your phone until you switch sync on.

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2mo ago

DuoVault - A private photo vault that becomes a shared one, for two

A photo & video vault for exactly two people. It starts private: no account, no sign-up. A 6-digit code becomes your encryption key, Face ID opens it, and it re-locks when you leave the app. When you're ready, one invite code turns it into a shared vault: whatever you add shows up on your partner's phone, with a shared timeline and an activity log (auto-deleted after 90 days). Everything is encrypted on-device before it syncs. The server only stores ciphertext; we can't see your photos.