Ad Mediation in React Native: How to Actually Make More Money From Your App
If you’re building a React Native app and just sticking with one ad network, you’re probably missing out on a chunk of cash. Ad mediation is the not-so-secret sauce that helps top apps earn way more than the rest. In this guide, I’ll break down what ad mediation actually is, how it works, and why it should be part of your React Native toolkit.
What Is Ad Mediation?
So, what’s ad mediation? Think of it as a go-between that sits between your app and a bunch of ad networks. Instead of plugging in just one network and crossing your fingers that it fills every ad slot, mediation lets you tap into a whole network ecosystem at once. It picks the best-paying ad for every impression, so you don’t have to do any guesswork.
It’s basically a lightning-fast auction happening behind the scenes every time someone opens a screen in your app. The mediation layer asks a bunch of networks to make their best offer, picks the winner, and shows that ad to your user. All of this happens in the blink of an eye, and your users never notice a thing.
Bottom line: mediation helps you squeeze the most money out of every ad, no matter where your users are.
How Does Ad Mediation Work?
Let’s break down how this actually works, step by step:
1. The Ad Request
When someone triggers an ad in your app – maybe they finish a level, open a screen with a banner, or tap a button for a rewarded video – your app sends a request to your mediation platform.
2. Waterfall vs. Programmatic Mediation
There are two primary models:
- Waterfall mediation: The platform checks with ad networks in a set order. If the first one can’t fill the ad or offers too little, it moves down the list. This is the traditional way of doing things.
- Programmatic mediation (sometimes called header bidding or in-app bidding): Here, all the networks throw in their bids at the same time, and the highest one wins right away. This is the new standard and usually means you’ll make 10 to 30 percent more than with just waterfall.
Most top mediation platforms now support both methods, but many have already switched to programmatic bidding for React Native apps.
3. Ad Selection and Display
Once there’s a winner, the mediation SDK drops the ad right into your React Native layout. The user just sees a normal ad, and you get paid the highest possible rate for that impression.
4. Reporting and Optimization
Your mediation platform pulls together all your stats – impressions, fill rates, eCPM, and revenue – into a single dashboard. Having everything in one place makes it way easier to keep tweaking and improving.
Key Ad Formats Supported in React Native Mediation
Most modern mediation platforms can handle all sorts of ad formats, like:
- Banner ads – persistent, low-friction placements
- Interstitial ads – full-screen ads shown between content transitions
- Rewarded video ads – opt-in video in exchange for in-app rewards (highest eCPM)
- Native ads – ads that match your app’s UI and feel
- Video ad mediation – dedicated pipelines for skippable and non-skippable video, frequently commanding premium CPMs from brand advertisers
Video ads are worth calling out. They almost always pay the most, so having mediation that can send your video ad requests to whoever pays best is one of the quickest ways to boost your app’s revenue.
AdMob Mediation and eCPM: A React Native Perspective
Google AdMob is usually the first ad network React Native devs try out, and it makes sense. There’s a ton of demand; it fills ads almost everywhere, and the React Native SDK is solid.
But if you only use AdMob, you’re capping how much you can earn. AdMob’s mediation lets you plug in other networks like Meta, AppLovin, Unity Ads, and ironSource, so they all compete for your ad spots and push your earnings higher.
Here’s the trick: the more networks you have competing, the better your eCPM gets. If you just use AdMob, you might see an eCPM of $2 to $4 for rewarded video in top markets. Add a full mediation stack, and that same spot could jump to $8 or even $15+ because everyone’s fighting to pay you more.
Why Use an Ad Mediation Platform in React Native?
So why is mediation a must-have if you want actually to make money with your React Native app?
Maximize Revenue Per Impression
No single network is the best everywhere, all the time. Mediation makes sure you’re always showing the highest-paying ad, without you needing to lift a finger.
Improve Fill Rates
If your main network can’t fill an ad (which happens a lot in less popular regions), mediation just asks the next network in line instead of showing nothing. More filled ads mean more money.
Reduce Engineering Overhead
Instead of wrestling with a bunch of SDKs for every network, you just add one mediation SDK and let it do the heavy lifting.
A/B Test Ad Placements
Most good mediation platforms have A/B testing built in so that you can play around with different ad types, how often they appear, and where they appear until you find the sweet spot between making money and keeping users happy.
Unified Analytics
One dashboard with all your stats beats logging into a bunch of different sites every morning just to see how you’re doing.
Access to Premium Demand
Programmatic mediation opens your app to big-brand advertisers and DSPs that bid in real time. You just can’t get that kind of demand with a single network.
Top Ad Mediation Platforms for React Native
Picking the right mediation platform matters. Here’s a quick rundown of the top options for React Native:
1. AppLovin MAX
MAX is one of the best out there for React Native. It supports in-app bidding, works with over 25 networks, and provides detailed reporting. It’s especially good for rewarded and interstitial ads.
2.CAS.ai
It connects your app to 20+ top ad networks (AdMob, ironSource, Unity Ads, AppLovin, Mintegral, and more) plus 150+ DSPs via RTB, processing over 1 million requests per second to find the maximum price for every single impression. With support for all major ad formats – rewarded video, interstitial, banner, MREC, and native – and a reported 1.5–2x ARPU increase after migration, it’s a strong contender for developers who want revenue-first, network-agnostic mediation. CAS also offers a no-loss A/B test guarantee: if your current platform outperforms CAS during the test, they compensate the difference. Already powering 5,000+ apps with 3+ billion downloads, it’s built for scale.
3. MoPub (now integrated into AppLovin)
Mobu was acquired and rolled into AppLovin, which is part of why MAX is now such a big deal.
When you’re picking a mediation platform, look for a robust React Native SDK, support for multiple networks, robust bidding features, detailed reporting, and helpful support.
How to Get Started With Ad Mediation in React Native
- Go for in-app bidding networks first. Programmatic demand almost always beats old-school waterfall CPMs for the same ad spots.
- Set eCPM floors so your ads don’t get sold for peanuts. Most mediation platforms let you set a minimum price for each network.
- Segment by geography – eCPMs vary. Split things up by country. eCPMs can vary widely depending on where your users are, so set different priorities for top markets like the US, UK, and Australia versus everywhere else. – A network with a $12 eCPM but a 40% fill rate may earn less than one with an $8 eCPM and a 90% fill rate.
- Try the rewarded video first. If you haven’t added it yet, do it – rewarded video almost always brings in the most money per user.
- Refresh your waterfall. Update your waterfall every month. Networks change all the time, so check your eCPMs and adjust things around as needed.
- Trying to hook up too many networks by hand without mediation – trust me, it’s a headache and not worth it.
- Skipping programmatic mediation and sticking with just waterfall is leaving money on the table.
- Forgetting GDPR/CCPA consent flows – All major ad mediation platforms have consent management tools; use them to stay compliant and maintain access to premium demand in regulated markets.
- Don’t go overboard with ads. Too many can annoy users and hurt your retention, so find a balance between making money and keeping people around.
Conclusion: Ad Mediation Is the Foundation of React Native Monetization
Whether you’re just launching your first React Native app or already have a big one, ad mediation is hands down the best way to boost your monetization.
By connecting to multiple demand sources through a single ad mediation platform, enabling programmatic ad mediation, and fine-tuning your video ad mediation setup, you give every impression the best possible chance to earn its maximum value.
The real difference between a good ad strategy and a great one? Are you letting networks fight over your ad spots, or just handing them off to whoever shows up first?
With the right mediation setup in React Native, you’ll always have networks competing for your ads – and your revenue will show it.
