A solo developer building small apps after work — and writing down what the process actually taught me.
Right after Tap Bird, Gomoku turned out to be selected for the Apps in Toss partner growth program as well. Tap Bird got an email; Gomoku got nothing, and I only found out from the console the day ...
On October 24, Apps in Toss emailed that Tap Bird had been selected for its partner growth program. From October 26, Toss itself runs a "browse a mini app for 10 seconds, earn points" promotion and...
We never applied, yet a congratulations notice was waiting in the Play Console. Teachers and specialists reviewed Math Monsters and approved it as a good app for children aged 6 to 12, so it now ca...
My apps introduce each other through a "You might also like" list at the bottom of the screen. I wrote a rule that puts the hubs at the top, but the 43 standalone apps already live on Apps in Toss ...
On the day I put the hubs on Apps in Toss, phone testing turned up four defects at once. Every hub forced itself into landscape, the hub home went blank below the title only when opened from a bene...
In a pre-release check of FreeCell, Spider and Pyramid, I found the standalone builds of all three contained no card images at all. They had only been borrowing Solitaire's deck inside the hub, so ...
The first icons for seven certification apps were two Korean characters like "care" or "drive," and they were rejected. That day I made the hub icon spec the rule for every app, a dark background w...
I re-ran all 100 levels through a solver to check that later levels really are harder. The rank correlation between level number and minimum pushes, box count and search nodes came out at 0.95 to 0...
Opening Search Console showed 79 percent of the Korean posts sitting in "Discovered, currently not indexed," while Korean queries surfaced the English root pages and clicked through at nearly zero....
I wrote 7,200 original practice questions for five Korean certification exams, care worker, cosmetologist, cook, baker and forklift or excavator operator. This covers the copyright call to avoid pa...