WallCraft AI — How I Built an AI Wallpaper App and Shipped It to the App Store

The Problem: Boring Wallpapers

Let's be real — most wallpaper apps are the same recycled stock photos wrapped in ads. You scroll through hundreds of generic landscapes and abstract gradients, and nothing feels yours. The default wallpapers on your phone are fine, but they're forgettable. And if you want something truly unique, you're out of luck.

I wanted wallpapers that were genuinely one-of-a-kind — created on demand, matching whatever mood or aesthetic I was into that day. And I figured if I wanted that, other people probably did too.

The Solution: AI-Generated Unique Wallpapers

WallCraft AI generates unique, high-resolution wallpapers using AI image generation. You pick a style, the AI creates something that has never existed before, and you set it as your wallpaper. Simple.

No stock photos. No recycled content. Every wallpaper is generated fresh, just for you.

Key Features

The style system is what makes it interesting. Instead of a freeform text prompt (which intimidates most people), you pick from curated styles — cyberpunk cityscapes, watercolor landscapes, minimal geometry, dark fantasy, and more. The AI handles the rest.

Tech Stack

I went full native Swift for this one. No React Native, no cross-platform framework — just SwiftUI and Apple's own tools. Here's why:

• SwiftUI — declarative UI, fast iteration, native feel out of the box
• SwiftData — local persistence for generated wallpapers, favorites, and history
• StoreKit 2 — in-app purchases for Pro subscription, clean async API
• Zero external dependencies — no CocoaPods, no SPM packages, nothing to break

The zero-dependency approach was deliberate. Every third-party library is a potential source of breakage, maintenance burden, and App Store review delays. For a simple, focused app like this, Apple's own frameworks cover everything you need.

The image generation happens server-side via API. The app sends a style request, the server generates the image, and the app downloads and caches the result. SwiftData handles the local gallery — every wallpaper you generate is saved and accessible offline.

Shipping Fast

The whole thing went from idea to App Store submission in one night. Not because I cut corners, but because the scope was ruthlessly small. One screen to generate. One screen to browse your gallery. One screen for settings and Pro. That's it.

Apple approved it on the first review — no rejections, no back-and-forth. Keeping the app simple and focused helped. No shady permissions, no hidden tracking, no dark patterns.

Try It

WallCraft AI is live on the App Store right now. One free wallpaper per day, no account required, no ads. If you want unlimited generations and access to all styles, there's a Pro option.

If you're a developer thinking about shipping a native iOS app — just do it. SwiftUI in 2026 is mature, StoreKit 2 is pleasant to work with, and the App Store review process is faster than ever. The hardest part is pressing "Submit for Review."