One Line on My Paywall Got 57% More People to Pay. Then I Killed It.
A 'less than a coffee' line lifted paying users from 5.4% to 8.4% on my AI tattoo app. Here's why I still removed it, and what to check on your paywall.
Writing
All writing.
Every guide and note, newest first. Sources, working examples and lessons from my own apps.
Apple's October 2026 App Review Update: What Changed and What to Do
Apple's App Review Guidelines October 2026 update: new guideline 2.5.19 on hidden features, 2.3.14 creative assets rules, AI imagery and a checklist.
The 5 Gemini 4 Argon Prompts That Built 5 Money-Making App Copies
The exact prompts I gave Gemini 4 Argon to rebuild five apps that make money: affirmations, fasting, habits, calories from a photo, AI room redesign.
Gemini 4 vs Claude Opus 5.5: I Gave Both the Same Mobile Game Prompt
Gemini 4 vs Claude Opus 5.5 on one detailed prompt: build a mobile game. Time, cost, self-testing, the twist, and all three games to play.
How ChatGPT's Intelligent UI Works, and What App Builders Should Copy
ChatGPT now answers with tiny interactive apps. How Intelligent UI works under the hood, 5 prompts to try, and 3 patterns to copy in your own app.
App Store Asset Library: A Creative Plan for ASO and Apple Ads
Plan App Store headers, search creatives, localization and controlled tests with Asset Library. Apple’s current specifications and Apple Ads availability.
App Store Connect API: 350 Writes Per Product
One auto-renewable subscription looks like a single object. Creating it through the App Store Connect API takes roughly 350 writes. Here is where they go.
App Store Keywords: You Only Get 160 Characters
Apple indexes only 30 + 30 + 100 characters of your app metadata. Most indie devs waste half of it. Here's what actually gets indexed, and how to reclaim it.
Hello, bytewise
What bytewise is, why it exists, and what you can expect from this space.