AdMob & Monetization

Google AdMob lets you earn revenue by displaying ads in your app. Primio’s Prompt Library includes templates for consent flow, banner ads, and interstitial ads — covering the most common ad formats.

Setup order

The order matters. You must implement the consent flow before adding any ad units.

1. Consent flow (required first)

   Use Prompt Library → AdMob Consent Flow. This sets up the GDPR/ATT consent dialog that asks users for permission to show personalized ads.

2. Banner ads

   Use Prompt Library → AdMob Banner Ad. Adds a persistent ad banner, typically at the bottom of a screen.

3. Interstitial ads

   Use Prompt Library → AdMob Interstitial Ad. Adds full-screen ads that appear at natural transition points (between screens, after completing an action).

Caution

Always implement the consent flow before adding any ad units. Showing ads without consent to EU users violates GDPR and can result in your AdMob account being suspended.

Creating an AdMob account

1. Sign up at admob.google.com

   Use your Google account. AdMob will ask for payment information to pay you earnings.

2. Create an app in AdMob

   Add your app (you can do this before it’s published — select “No, I haven’t published it yet”).

3. Create ad units

   Create the ad units you need: banner, interstitial, rewarded, etc. Each unit gets a unique ID.

4. Note your ad unit IDs

   You’ll need these to replace the test IDs in your app before publishing.

Replacing test IDs with real ones

The Prompt Library templates use test ad unit IDs by default. These show placeholder ads during development but generate no revenue.

Before publishing, replace them with your real AdMob ad unit IDs:

“Replace the test AdMob ad unit IDs with my real IDs: banner: ca-app-pub-xxx/yyy, interstitial: ca-app-pub-xxx/zzz”

Caution

Two common mistakes to avoid: publishing with test IDs (you won’t earn anything) and clicking your own real ads (Google will suspend your account). Always verify that real IDs are in place before your production build.

Other monetization options

Ads aren’t the only way to monetize. You can ask Primio to add other revenue models:

In-app purchases:

• “Add a premium upgrade that removes ads for $2.99”
• “Add a one-time purchase to unlock all themes”

Subscriptions:

• “Add a monthly subscription for premium features”
• “Add a free trial with a weekly subscription”

Paywalls:

• “Show a paywall after the user has used the app 3 times”
• “Lock premium recipes behind a subscription”

Note

In-app purchases and subscriptions require additional setup in Google Play Console and/or App Store Connect. The AI can generate the Flutter code, but you’ll need to configure products and pricing in the store dashboards separately.

Next steps

REST APIs

Connect to external APIs for data, payments, and third-party services.

Publishing Overview

Publish your app to Google Play, the App Store, or the web.