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Every page on SugarMount in one place: app pages and help articles, AX notes by topic, and the privacy policies.

Main pages

Apps and help

Photo & video

SugarAlbum (Easy Video Maker)
Compress Image (SugarCompress)
- Resize an ID photo for Korean application uploads
- Compress a photo to under 100 KB on Android
Flip & Rotate Image (SugarFlip)
- Unmirror a selfie on a Samsung Galaxy phone
Convert Image JPG PNG WEBP (SugarConvert)
- Convert HEIC to JPG on a Samsung Galaxy phone
- PNG to JPG on Android with a white background

Documents & text

Everyday

Games

All AX notes

Working with agents 7 pages

Several Claude Code sessions, one repo: the file owner table, checked against 13 merges October 29, 2026
Three agent designs, three judges: the market judge alone would have picked the one that crashed on every KakaoTalk file October 27, 2026
Commits without a Co-Authored-By trailer: the agent made 26 of the 29 we could check October 26, 2026
Running an AI marketer on a schedule four times a day: the permission table that leaves money, accounts and policy to a person October 23, 2026
84 agents reviewed a release: three refuters per finding, and only the 20 survivors got fixed October 22, 2026
"Use hundreds of agents" in practice: 10 workstreams, 59 commits in a day, three running at once October 21, 2026
How to write AGENTS.md: only the rules an AI coding agent gets wrong October 18, 2026

Testing and release 8 pages

Android development 12 pages

Pre-gzipping Android assets, measured: zero APK savings, and .pack.gz became .pack with a FileNotFoundException October 31, 2026
A market:// link opens a store chooser on SKT-sold Samsung phones: set the Play package first October 31, 2026
A splash that never moved on: addOnCompleteListener(this) and onStop October 31, 2026
"6.7" < "6.11" is false: comparing Remote Config versions as strings froze content updates October 30, 2026
R8 kept 5 AdMob test IDs in our release build: one listOf().any line and a dex count October 29, 2026
16 KB page size support: a blue tint that only NDK 27 and 29 produced, and 12 .so files measured again October 28, 2026
A launch crash only on Android 7: one java.time call in a shared module and a NewApi lint gate October 26, 2026
Android showed some Hangul as blank gaps: NanumSquare's cmap claimed 11,172 syllables but drew only 2,479 October 23, 2026
androidx.pdf beta01 runs your Application.onCreate a second time, in an isolated process, and the PDF silently never opens October 22, 2026
Jetpack Compose splits Korean between syllables, but the stacked 'R/u/l/e' label came from how a Row measures October 21, 2026
Play Console said our DEX was 39% optimized. The culprit was a keep rule for an SDK we never used October 20, 2026
Building an Android HWP viewer: rhwp in a WebView, measured on 222 documents October 19, 2026

Game development 4 pages

A reverse-construction generator and the gate behind 1,100 arrow-puzzle levels October 30, 2026
Testers said the time was "too long, so it's easy": checking that with a simulation before cutting puzzle par times by 30% October 28, 2026
Puzzle game day-one churn: per-device event timelines, exact board math and four walls in chapter one October 24, 2026
Block puzzle difficulty: how simulation bots caught a game you could never lose October 19, 2026

Play Store and monetization 3 pages

Website and search 4 pages

Structured data after FAQ rich results ended: what we kept for GEO October 28, 2026
A static site that several AI agent sessions edit: one --check gate before every commit October 25, 2026
Privacy policy AI processing location (cross-border transfer): a notice fixed twice in one day, then tied to code October 23, 2026
Every sitemap lastmod had the same date: deriving modified dates from a content hash October 20, 2026

Retrospectives and numbers 4 pages

Daily users rose after the redesign while organic D1 retention fell from 15.2% to 11.2% October 30, 2026
We built three photo apps before checking the market: this year's new apps had a median of 1,166 installs October 25, 2026
A year of AI coding in 701 commits: from "complete" to cause and verification October 24, 2026
How we shipped four Android apps in 20 days with an AI coding agent October 18, 2026

Privacy policies