Tower Stack — One Tap, One Floor
A timing stacker where every tap adds a floor, with power-ups you can switch off, separate records for height and score, and a cash-out button, now on Google Play and Apps in Toss
Fadongkwon Soft
Fadongkwon Soft
A solo developer building small apps after work — and writing down what the process actually taught me.
Two Bugs Hiding in the Instant a Screen Changes — A Speed Divided by Nothing and a Tap That Lingered
The real reason the brick-breaker ball crawled was that I measured a hidden element and got a height of 1px. In the slide puzzle, the same finger motion that placed the last tile also pressed the b...
Pixel Pong — One-on-One Against the AI or a Friend
Pong with three AI difficulties, local two-player on one phone and an arcade mode with power-ups you can switch off, now on Google Play and Apps in Toss
Number Slide — The 15 Puzzle, With Pictures
The classic 15 puzzle with a picture mode, a completion reveal, a daily board and auto-save, now on Google Play and Apps in Toss
Traffic Never Comes Through One Door — Opening 54 Paths on Instagram and YouTube
I had built 29 apps and still left the road to them blocked. Store links were missing from 24 of 27 Instagram posts and 20 of 27 YouTube videos, and the Toss link appeared in none of the 54. While ...
I Moved the Play Console Clicking to the API — 121 Locale Slots and a One-Line Release
The video on a store listing is a per-language field. Locale counts differ by app — 2, 17, or 29 — and through the console web each language took 12 to 15 seconds, while the Korean field sometimes ...
Snake — Eat, Grow, Try Not to Bite Yourself
The classic snake with swipe controls, one free revive per run and best-score records, now on Google Play and Apps in Toss
Adding Record Tabs to a Leaderboard With No Read API — 20 Mini Games
Toss Game Center lets you submit a score but never lets you read the rankings back. With no data to draw, I split the job in two — my app owns the time axis, Toss owns the comparison — and shipped ...
The Sound Was Only Late on iPad — Four Steps That All Waited for the Play Button
Hangul Monsters took noticeably long to read a word aloud. Android and desktop were fine; only Safari on iPad was slow. The cause was a single line. Every time the app spoke, it created a brand-new...
Checking 27 Apps by Hand Every Morning, Until I Built a Ledger
Apps in Toss shows one app at a time, with no combined view across apps. Here is the ledger, the collector scripts and the single-file dashboard that replaced the morning clicking, and why the dail...