Custom Branded App

What to Prepare

1. Brand Identity

Basic info that identifies your app.

2. Apple Developer Account

Required to publish your app on the iOS App Store.

What you need:

• An active Apple Developer account ($99/year)
• Your Team ID (found under Account → Membership)

Create an APNs key for push notifications:

1. Go to Certificates, Identifiers & Profiles → Keys
2. Click + and enable Apple Push Notifications service (APNs)
3. Download the .p8 file — save it securely, you can only download it once
4. Note the Key ID shown on the page

Register your Bundle ID:

1. Go to Identifiers → App IDs → create a new App ID
2. Set the Bundle ID to your chosen value (e.g. com.acme.support)
3. Enable the Push Notifications capability

Send us: Team ID, Key ID, and confirm the Bundle ID is registered.

3. Firebase Project

Firebase powers push notifications and Google Sign-In in your app.

Step 1 — Create a Firebase project

1. Go to Firebase Console and create a new project
2. Add two apps using your Bundle ID — one for iOS, one for Android
3. Download the config files:

Step 2 — Enable required services

In your Firebase project:

• Authentication → Sign-in method → enable Google
• Cloud Messaging → enabled by default, no action needed

Step 3 — Upload your APNs key to Firebase (iOS push notifications)

1. Go to Project Settings → Cloud Messaging tab
2. Under Apple app configuration, click Upload next to APNs Auth Key
3. Upload your .p8 file and enter the Key ID and Team ID

Step 4 — Note these two values

Send us: both config files + the two values above.

4. Android Signing Key

Required to publish your app on the Google Play Store.

4.1 Generate Keystore

Run this command to generate a keystore file:

keytool -genkeypair -v -storetype PKCS12 \
  -keystore your-app-release.keystore \
  -alias your-app-key \
  -keyalg RSA -keysize 2048 -validity 10000

You'll be prompted to set a keystore password and key password — keep both safe.

4.2 Get SHA Fingerprints

keytool -list -v -keystore your-app-release.keystore

Copy the SHA-1 and SHA-256 fingerprints.

4.3 Add Fingerprints to Firebase

1. Firebase Console → Project Settings → Your Android app
2. Add both SHA-1 and SHA-256 fingerprints

Send us:

5. Image Assets

All images should be high quality and exported at the specified sizes.

App Icon — used to generate all icon sizes for both platforms

Splash Screen — shown while the app is loading

In-App Logos

6. Brand Colors

Provide all colors in hex format (#RRGGBB):

7. App Content

Text and links shown inside your app.

Onboarding screen

Legal & support links

Delivery Checklist

Use this to confirm everything is ready before sending.

Firebase

• google-services.json (Android)
• GoogleService-Info.plist (iOS)
• Google OAuth Web Client ID
• iOS Reversed Client ID

Apple (iOS)

• Apple Developer Team ID
• APNs Auth Key (.p8 file) + Key ID
• Bundle ID registered in Apple Developer Portal with Push Notifications enabled

Android

• Keystore file (.keystore or .jks)
• Key alias, keystore password, key password

Branding

• App icon (1024×1024, no transparency)
• Splash logo (transparent background)
• logo.png, logo-white.png, bot-avatar.png
• 6 brand colors in hex format

Content

• 4 onboarding text strings
• 3 URLs (terms, privacy, contact)
• App Store listing text (name, description, keywords, category)
• Screenshots for both platforms (or request that we generate them)

Next Steps

Once everything above is ready:

1. Send your assets — Share all files and information with the YourGPT team
2. We review — We confirm everything is in order and follow up with any questions
3. We build — Your branded app is configured and compiled
4. You approve — You receive a test build to review before going live
5. You publish — Submit to the App Store and Google Play under your accounts