#Experiment

Tracking In-App Purchase Revenue with Flutter and Adjust

How to send revenue data to Adjust after a purchase in a Flutter app, plus how to switch from sandbox to production.

Implementing Firebase FCM Push Notifications (WebView + Android)

How to implement Firebase Cloud Messaging (FCM) push notifications in a WebView-based Android app. Covers FCM token concepts, PHP/Kotlin code examples, and broadcasting to all users via topics.

Service Account Setup for Server-Side Google Play Billing Verification

How to configure a service account to verify receipts server-side after a successful Google Play Billing Library purchase. The Play Console UI has changed — the old 'API access' menu is gone.

Flutter Android Log Monitoring Setup on macOS

A guide to setting up a Flutter + Android emulator log monitoring environment on macOS.

Setting Up Adjust and Google Play Console Before SDK Integration

A walkthrough of the dashboard-side setup for Adjust SDK and Google Play Billing — app registration, developer verification, and in-app product creation.

Trying to Have a Voice Conversation with AI

Planning a Japanese voice chat system built on the voice-chat project, using Gemini 2.0 Flash for LLM and VOICEVOX for TTS.

I Made a Skill to Replace Claude Code's WebFetch

A workaround for the bug where WebFetch(domain:*) wildcard doesn't work — achieving equivalent functionality with curl and a custom skill.

Splitting CLAUDE.md Didn't Work — GitHub Features Did

Distributing context across local MD files hit a wall. Delegating responsibilities to GitHub Issues, Wiki, and Projects solved it.

FOREIGN_KEY_CHECKS Didn't Work When Running mysqldump SQL via PHP PDO

A migration failure caused by relying on mysqldump's conditional comments, and how to fix it.

Trying Image Generation in Google Flow — Comparison with Gem and Prompt Tips

Testing the image generation features of Flow, now available in Google AI Pro. Findings on the He/She pronoun issue, the effectiveness of natural English prompts, and how to use Flow vs Gem.

Gemini Gem's Image Reference Broke Overnight, So I Prayed to Another AI and Fixed It

A Gemini Gem that generated characters perfectly yesterday suddenly fell apart. A record of reviving it through prompt revision.

Steam DLC Depot Configuration Troubleshooting

The cause of and fix for a DLC appearing 'empty' on Steam. Explains how depot management works.