I've been building and running personal apps since 2014 — wallpaper apps, healing apps, manifestation apps — and the cumulative download count has passed 50 million. At peak, my AdMob revenue hit over 1.5 million yen per month. So when Rork started getting attention as a prompt-based app builder, I figured: wallpaper apps aren't complex. Let me actually try it.
What I found wasn't what I expected — in both good ways and not-so-good ways.
Why I Chose a Wallpaper App as the Test Case
Wallpaper apps look simple from the outside: show images, let users save them, done. But after 12 years of running apps in this genre, I know that longevity depends on details — scroll smoothness, image load speed, category filtering accuracy, and the timing of ad placements. These invisible factors drive retention, which drives revenue.
If Rork could generate a working wallpaper app skeleton quickly, it would be a meaningful signal about where the tool stands for production-level indie development.
What I Built and How I Prompted It
My prototype targeted this feature set:
- Category tabs (Nature, Urban, Abstract)
- 3-column image grid per category
- Tap to full-screen, share button
- Fixed banner ad area at the bottom
- Dark mode support
The prompt I used was roughly:
Build a wallpaper app with:
- Category tabs at the top (Nature, Urban, Abstract)
- 3-column thumbnail grid per category
- Tap opens full-screen view with share button
- Fixed banner ad area at the bottom
- Dark mode support
The output was a React Native-based structure. The UI skeleton matched the prompt surprisingly well.
Where Rork Genuinely Impressed Me
I wasn't prepared for how fast and coherent the initial output was. A 3-column grid with smooth tab switching and a full-screen modal with transition animation — all working from the first prompt.
When I first built a wallpaper app over a decade ago, getting the grid layout right took most of a day. The gap between then and now is real.
For developers who can clearly articulate what a screen should look like, Rork is a legitimate time-saver. Dark mode toggle, modal animation parameters, category state management — these came together in a few additional prompt steps.
The Hard Part: Integrating AdMob
This is where expectations met friction.
Rork can create the UI slot for a banner ad. But making the ad actually work requires native setup: installing react-native-google-mobile-ads, adding App IDs to AndroidManifest.xml and Info.plist, and implementing ATT (App Tracking Transparency) consent on iOS.
# Use the official Google package, not the deprecated expo-ads-admob
npx expo install react-native-google-mobile-ads
# Add to app.json:
# "react-native-google-mobile-ads": {
# "android_app_id": "ca-app-pub-XXXXXXXXXXXXXXXX~XXXXXXXXXX",
# "ios_app_id": "ca-app-pub-XXXXXXXXXXXXXXXX~XXXXXXXXXX"
# }Layering this onto Rork's generated code is a separate workflow from Rork's UI generation speed. Unless you're using Rork Max (which can output native SwiftUI and deeper configurations), AdMob setup remains manual.
For developers whose primary revenue model is ad-based, this gap matters. See AdMob Monthly Revenue: How I Reached 1.5M Yen with Personal Apps for more on building ad revenue systems.
Scroll Performance: A Real Concern for Image-Heavy Apps
Wallpaper apps live or die by how they feel when you scroll through hundreds of images.
Rork's default Image component settings aren't optimized for high-volume grid scrolling out of the box. I experienced frame drops and load-in flickering that didn't fully resolve through prompt iteration. For a genre where "beautiful but laggy" is a one-star review waiting to happen, this is worth knowing upfront.
My grandfather on both sides of my family were temple carpenters. Watching them work, I absorbed the idea that what you build carefully lasts decades. Code isn't different — the details that users barely notice are often what keeps them coming back. Rork's generated skeleton gave me a solid starting point, but getting scroll performance right required hands-on adjustment.
My Honest Overall Assessment
Here's where Rork works well for wallpaper-genre apps:
- Prototyping phase: Get a testable UI in front of real users fast
- Pattern-heavy layouts: Grids, tabs, modals, list views — Rork handles these reliably
- Design direction testing: Generate multiple layout variations quickly to compare
Here's where it's still limited:
- Deep native integrations: AdMob, in-app purchases, and other native-config-heavy features require manual work or Rork Max
- Scroll performance tuning: Image-heavy apps need optimization that goes beyond what prompt iteration covers
- Long-term maintainability: The generated code structure isn't always set up for easy future iteration
For context on how monetization models compare across different approaches, Rork App Monetization: A Realistic Comparison from an Indie Dev Perspective is worth reading alongside this.
Who This Tool Is Right For
Based on 12 years of solo app development, Rork fits developers who can read and modify code but want to dramatically shorten the UI scaffolding phase. It also works well for non-engineers who want a prototype-quality demo to test an idea or show to potential collaborators.
Expecting a fully production-ready, monetization-complete app to come out of Rork without additional work is where disappointment tends to happen. The gap between a working prototype and a revenue-generating app in the stores still requires effort — Rork just makes the first half of that journey faster.
If you're evaluating whether the pricing makes sense for your workflow, check out Rork Pricing Plans: An Indie Developer's Guide and start with a prototype project.