A solo developer building small apps after work — and writing down what the process actually taught me.
Pure score games have no hint, no undo and no revive, so there is no hook to hang a rewarded ad on. Here is the shared entry-ticket module we built for seven games, and the two traps we walked into
A brick breaker with endless levels, a ball that keeps speeding up, power-ups, one free revive per run and records, now on Google Play and Apps in Toss
English readers who clicked the privacy policy got stranded on the Korean site. The cause was that only the home page followed the opposite rule — the root was English while every other path defaul...
Classic Klondike solitaire with auto-collect, undo, a daily deal and auto-save, now on Google Play and Apps in Toss
Every in-app ad number from 14 mini apps on Apps in Toss, broken down by day and by app. 13,365 KRW over 27 days, 2,073 impressions, 6.45 KRW per impression. Why eCPM varies twentyfold between apps...
Five days ago I called it my last mistake. I was wrong. The console showed approved, active and delivered every day, while the number of people receiving anything stayed at zero. If the group code ...
Minesweeper with three difficulties, a flag mode, and a cell-size option you can change mid-game, now on Google Play and Apps in Toss
A clean take on 2048 with undo, a daily challenge that gives everyone the same board, statistics and auto-save, now on Google Play and Apps in Toss
The Apps in Toss build of Hangul Monsters hid its speech mode entirely and ran listening-only, because the code hardcoded available:false on the belief that the Toss WebView had no speech recogniti...
On September 8 I launched ten mini games on Apps in Toss, and every one of them shipped with an empty ad slot because I never created the ad placements in the console. Nothing errored, so it took t...