I Built an iPhone App In Minutes With Just ONE Prompt - Complete Tutorial

Kristoffer · November 11, 2025 · 5 min read

I just cloned a complete app with more than 1 million downloads in less than 20 minutes - without writing a single line of code.

In this tutorial, you'll learn exactly how to do it too. By the end, you'll have a fully working mobile app on your phone that you can use right away, and I'll show you how to deploy it live to the App Store.

The Plan

Here's what we'll do:

• Braindump and plan your app idea
• Build the mobile app using an AI app builder
• Set up the database and user authentication for sign-ups and logins
• Test the app on your phone
• Deploy it live to the App Store

Just 1 year ago, building an app like this would've cost you more than $20,000 and taken a few months with hired developers. Now, you can do it yourself in less than 20 minutes with zero coding experience.

Step 1: Plan Your App (0:54)

Start at Braindumper.ai to structure your idea into buildable prompts:

1. Select platform: Choose "Mobile App"
2. Select builder: Choose "Rork"
3. Brain dump: Write everything about your app idea
4. Generate plan: Get structured prompts for each feature

Braindumper limits you to 3 core features for your MVP and generates optimized prompts for the AI builder. This prevents feature creep and ensures you actually finish building.

Example output: For a mental health app, it generated prompts for breathing exercises, panic assistant, and emergency contacts - stripping out 3 unnecessary features from my original idea.

Step 2: Build With Rork (3:49)

Initial Build

1. Open Rork and paste the initial prompt from Braindumper
2. The AI builds your React Native + Expo project structure in ~30 seconds
3. You get a working home screen with navigation to all 3 features

What's created automatically:

• React Native project setup
• Expo configuration
• Navigation system
• Home screen UI
• Placeholder screens for each feature

Build Each Feature

Copy each feature prompt from Braindumper and paste into Rork one by one:

Feature 1 - Breathing Exercise:

• AI creates timer-based breathing animations
• Refine with prompts like: "Make the breathe in/out circle animation more obvious"
• Use screenshots to fix UI issues: "Remove overlapping text"

Feature 2 - Panic Assistant:

• AI builds guided prompt flow
• Refine animations: "Make transitions between prompts smoother"

Feature 3 - Emergency Contact:

• Initial version only calls 911
• Upgrade with: "Add option to call 911 or call a friend from contacts"
• AI integrates with phone's contact list
• Polish navigation: "Remove X button, keep back arrow only"

Pro tip: Take screenshots and paste them with your prompts for more accurate fixes.

Step 3: Add Backend (8:49)

Enable Backend in Rork

1. Click "Integrations" > "Enable Backend" (~5 minutes to set up files)
2. Prompt: "Install Supabase and create the authentication system"
3. AI builds sign up/sign in screens and connects to Supabase (~4 minutes)

Configure Supabase

1. Create project at supabase.com
2. Copy your Project URL and API key (anon/public)
3. In Rork: "Integrations" > "Environment variables"
4. Add SUPABASE_URL and SUPABASE_ANON_KEY

Test Authentication

1. Reload app in Rork
2. Click profile icon > sign up with email/password
3. Verify email from Supabase
4. Check Supabase dashboard > Authentication to see your user
5. Sign in to the app

What you built: Complete auth system with sign up, login, email verification, and secure database - all from one prompt.

Step 4: Test on Your Phone (11:54)

Deploy to Phone

1. In Rork, switch to "Test on your phone" tab > Expo Go
2. Scan QR code with your phone camera
3. Click "Open in Expo Go" (install app if needed)
4. App bundles and runs on your phone

Test Everything

• Sign in with your account
• Test all 3 features (breathing, panic assistant, emergency contact)
• Verify phone integrations (contacts access, call functionality)
• Test sign out/sign in

Troubleshooting:

• Not loading? Check same WiFi network
• Features broken? Refresh in Expo Go
• Login issues? Verify Supabase environment variables

Step 5: Deploy to App Store (13:29)

Publishing Options

Click "Publish" in Rork:

• Rork link: Share via QR code (requires Expo Go for Android, Rork app for iOS)
• App Store: iOS deployment
• Google Play: Android deployment

App Store Deployment

Requirements:

• Apple Developer Membership ($99/year)
• Expo account (free)

Steps:

1. Click "Publish to App Store" > "New Submission"
2. Create Expo token:
   • Go to Expo Settings > Access tokens
   • Generate new token
   • Paste in Rork
3. Configure app:
   • App name
   • Version: 1.0.0
   • Bundle identifier (use default)
   • Click "Start Submission"
4. Monitor: Check expo.dev for submission status

After Submission

• Submission: App should now be uploaded in App Store Connect, now you need to fill out the app details and submit for review
• Review: Apple reviews in 1-3 days (90% of reviews takes less than 24h)
• Approval: App goes live or you get feedback to fix issues
• Requirements: Add app description, screenshots, privacy policy, and icon in App Store Connect

Pro tips:

• Polish your app before first submission (Apple is strict)
• Generate privacy policy with AI and buy a cheap domain for a simple landing page

What You Just Built

In under 20 minutes, you created:

• React Native + Expo mobile app with 3 working features
• Complete authentication system with Supabase backend
• Production-ready app tested on your phone
• App Store submission ready for review

The workflow: Braindumper → Rork → Backend → Test → Deploy

FAQ

Do I need coding experience?
No. AI handles all technical implementation.

What's the cost?

• Braindumper: FREE
• Rork: Free tier available
• Supabase: Free tier (paid from $25/mo)
• Apple Developer: $99/year
• Expo: $0 using free tiers

Can I monetize it?
Yes - in-app purchases, subscriptions, ads, or paid downloads.

Can I add features later?
Yes - just prompt Rork to add new features anytime.

What about Android?
Same process - just select "Publish to Google Play" instead.

Next Steps

Ready to build? Start at Braindumper.ai to turn your idea into a structured plan.

Want to see more? Check out my other videos where I clone apps that sold for $1M+.

Happy building! 🚀