Google AdMob is a mobile advertising platform that helps app developers earn revenue by displaying ads inside their apps.
Think of it as renting out a small piece of your app’s interface to advertisers — and getting paid for it.
🔗 Official Website: admob.google.com
🔗 Help Center: support.google.com/admob
🚀 Why Use Google AdMob?
- Global Reach: Access millions of advertisers via Google’s ad network.
- Multiple Ad Formats: From small banners to immersive videos.
- Cross-Platform: Works for Android, iOS, Unity, and more.
- Powerful Targeting: Show ads that fit your audience’s interests.
- Easy Integration: SDKs and libraries for popular frameworks like React Native.
📊 Types of Ads in AdMob
AdMob offers five main ad formats. Choosing the right type depends on your app’s design and user flow.
1️⃣ Banner Ads – Steady & Non-Intrusive
- What are they? Small rectangular ads that stick to the top or bottom of the screen.
- Best for: Continuous low-impact revenue while users browse content.
- Example: A weather app shows a banner at the bottom while users check forecasts.
2️⃣ Interstitial Ads – Full-Screen Impact
- What are they? Large image or video ads that cover the whole screen at natural breaks.
- Best for: Games between levels, news apps between articles, or after key user actions.
- Example: After a user finishes reading an article, an interstitial ad appears before loading the next one.
3️⃣ Rewarded Ads – User-Opt-In Engagement
- What are they? Ads users watch voluntarily in exchange for a reward.
- Best for: In-game bonuses, unlocking premium features, or offering extra content.
- Example: A user watches a 30-second video to unlock a bonus feature in a productivity app.
4️⃣ Native Ads – Blend Seamlessly with Your UI
- What are they? Ads styled to match your app’s look and feel, labeled as “Ad” or “Sponsored.”
- Best for: News feeds, social media-style timelines, or discovery sections.
- Example: A travel app’s article list includes a sponsored post for a flight booking service.
5️⃣ App Open Ads – Instant Attention Grabbers
- What are they? Full-screen ads shown when launching or returning to an app.
- Best for: High-traffic apps that are opened frequently.
- Example: A quick ad appears when opening a fitness tracking app before showing the dashboard.
🛠 How to Add AdMob to Your React Native App
We’ll use the react-native-google-mobile-ads
library for integration.
Step 1: Create an AdMob Account
- Go to admob.google.com and sign in with your Google account.
- Add your app for Android and/or iOS.
- Create Ad Units (e.g., banner, interstitial).
- Save your App ID and Ad Unit IDs.
Step 2: Install the AdMob Library
npm install react-native-google-mobile-ads
# or
yarn add react-native-google-mobile-ads
Step 3: Configure Your App
-
Android: Update
AndroidManifest.xml
with your App ID. -
iOS: Update
Info.plist
. -
Expo: Add it to
app.json
.
Initialize the SDK early:
import mobileAds from 'react-native-google-mobile-ads';
mobileAds()
.initialize()
.then(() => console.log('AdMob is ready!'));
Step 4: Display an Ad (Example – Banner)
import { BannerAd, BannerAdSize, TestIds } from 'react-native-google-mobile-ads';
const adUnitId = __DEV__ ? TestIds.BANNER : 'YOUR_REAL_AD_UNIT_ID';
<BannerAd
unitId={adUnitId}
size={BannerAdSize.FULL_BANNER}
onAdLoaded={() => console.log('Banner loaded')}
onAdFailedToLoad={(err) => console.log('Failed to load ad', err)}
/>
💡 Pro Tip: Always use TestIds
during development to avoid account issues.
Step 5: Test & Go Live
- ✅ Check ads load without breaking your layout.
- ✅ Ensure ads don’t block important UI.
- ✅ Replace test IDs with real IDs before release.
🎯 Controlling Ad Relevance
While you can’t pick specific advertisers, you can manage categories:
- Allow relevant topics (e.g., “Technology,” “Education”).
- Block sensitive ones (e.g., “Gambling,” “Politics”).
🔒 Privacy & Compliance
If your app serves users in regions with strict privacy laws (like GDPR in Europe or CCPA in California):
- Get user consent for personalized ads.
- Offer a non-personalized ad option.
✅ Key Takeaways
- Pick ad formats that match your app’s flow.
- Use category filters to keep ads relevant.
- Test ads in staging with Google’s test IDs.
- Respect user experience — don’t overload with ads.
With the right setup, Google AdMob can turn your app into a steady revenue generator without sacrificing usability.
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