All Articles
Why Your Apps Script Stops Mid-Batch When Calling the Gemini API — UrlFetchApp Timeouts and the 6-Minute Execution Limit
When Apps Script calls the Gemini API, two limits collide: UrlFetchApp's response timeout and the 6-minute script runtime cap. Here is how to tell them apart and how I work around them with chunking, checkpoints, and time-based triggers.
Building Automatic Wallpaper Category Classification with Gemini Vision
An indie developer shares how they implemented automatic wallpaper image classification with the Gemini Vision API — including accuracy results, real pitfalls, structured-output tips, and a cost comparison with GPT-4o Vision.
Gemini API asyncio Patterns for Production: How I Cut Processing Time by 80% in My Indie App Backend
A hands-on report on integrating Gemini API asyncio into a production backend. Covers Semaphore-based rate limiting, exponential backoff, and partial failure handling from real experience building a 50M+ download wallpaper app.
Auto-generating Japanese and English Release Notes from git log with Gemini API — A Real Implementation from Beautiful HD Wallpapers v2.1.0
I realized I was spending 1–2 hours per release writing notes in multiple languages. Here's how I automated that with Gemini API and git log — tested on Beautiful HD Wallpapers v2.1.0, with code you can run today.
Diagnosing INVALID_ARGUMENT Errors in Gemini API Batch Image Analysis
When using the Gemini API to analyze multiple images at once, INVALID_ARGUMENT errors can be surprisingly hard to diagnose. This guide covers the three root causes—MIME type mismatches, inline data size limits, and contents structure errors—with code to fix each one.
Auto-Generating App Metadata in 30 Languages with Gemini API — Lessons from Beautiful HD Wallpapers
How I used Gemini API to auto-generate App Store and Google Play metadata in 30 languages for a 50M+ download wallpaper app. Covers prompt design, character limit handling, and real results from 3 months of production use.
Automating App Store and Google Play Review Replies with Gemini API — The 8-Second Rule I Discovered the Hard Way
A practical implementation record of automating multilingual app review replies using Gemini API, based on managing apps with 50M+ cumulative downloads. Covers the undocumented 8-second wait rule that Apple's API silently enforces.
Debugging Gemini API Calls from Next.js App Router Server Actions
Practical solutions for the most common errors when calling Gemini API from Next.js App Router Server Actions: undefined env vars, broken streaming, and deploy-only failures.
Testing Gemini Vision for Wallpaper Auto-Classification — Real Accuracy Numbers and Pitfalls
An indie developer behind a 50M+ download wallpaper app shares a hands-on Gemini Vision classification experiment — including a first attempt at 67% accuracy and the improvements that brought it to 87%.
Automating Firebase Crashlytics Analysis with Gemini API — A Real-World Implementation from an Indie App
A real-world implementation record of automating Firebase Crashlytics log analysis with Gemini API, validated during development of an indie wallpaper app (v2.1.0). Includes Before/After code for a RecyclerView crash fix and a production cost breakdown.
Making Gemini API 12x Faster with asyncio: Lessons from Multilingual App Store Generation
A real-world account of parallelizing Gemini API calls with asyncio during the iOS update of Beautiful HD Wallpapers. Learn how asyncio.gather() with rate limit handling cut multilingual generation from 13 minutes to 65 seconds.
3 Gemini API Embedding Errors I Hit Building a Wallpaper App — and How I Fixed Them
Three real Gemini API Embedding errors encountered while building an auto-categorization feature for a wallpaper app with 50M+ downloads: INVALID_ARGUMENT, RESOURCE_EXHAUSTED 429, and poor RAG precision — with working code fixes.