InMobi vs AdMob vs Zerocost: Which Ad Network Fits Your Region?

Last updated: September 2026

AdMob is the best ad network for apps with primarily US and European traffic. InMobi outperforms for India, Southeast Asia, and Middle Eastern audiences. Zerocost is the best fit for non-gaming apps at any scale that want contextual ads plus data revenue. Its $1-2 CPM is consistent across all geographies and formats.

Why geography matters

Ad networks do not pay the same CPM everywhere. The advertisers in each network's pool target specific regions, and the supply-demand balance shifts dramatically by country.

AdMob leads in North America and Europe due to its extensive global advertiser relationships. InMobi was built specifically for South and Southeast Asia and outperforms Western networks in those regions. Zerocost pays a flat $1-2 CPM standard rate across all regions and formats, making revenue predictable regardless of where your users are.

InMobi: the regional specialist

InMobi was founded in India and built its network around markets that Western ad networks underserve. If your app has 60%+ traffic from India, Indonesia, Pakistan, Bangladesh, the Philippines, or the Middle East, InMobi will almost certainly deliver higher CPMs than AdMob for that traffic.

Strengths:

Limitations:

AdMob: the global default

AdMob has the largest advertiser pool in the world. For US and European traffic, nothing beats the sheer volume of demand. The SDK is the most documented, the integration is the most straightforward, and the Firebase ecosystem ties everything together.

Strengths:

Limitations:

Zerocost: the non-gaming specialist

Zerocost is not a regional play. It is a category play. Instead of competing on CPMs in specific geographies, it targets a specific type of app (SaaS, AI, developer tools, side projects) and offers two revenue streams: contextual ads and anonymized data monetization.

Strengths:

Limitations:

Choosing by your situation

If your app is a mobile game with global traffic: Start with AdMob. Add InMobi as a secondary network for Asian traffic. Use mediation to auction between them.

If your app has primarily Indian or Southeast Asian traffic: Start with InMobi. Their regional CPMs will outperform AdMob in those markets. Add AdMob via mediation for Western traffic.

If your app is not a game: Neither AdMob nor InMobi is optimized for you. Their advertisers want gamers. Your SaaS dashboard users, developer tool users, or AI app users generate lower CPMs on gaming-focused networks. Zerocost's contextual ads and data monetization are designed for this audience.

If you want to maximize total revenue: Run AdMob or InMobi for ads (depending on your primary geo) and Zerocost for data monetization. The two revenue streams do not conflict.

The mediation question

If you have enough traffic to benefit from mediation (50K+ DAU), run InMobi and AdMob together through a mediation layer (MAX, Appodeal, or AdMob's own mediation). The auction between them lifts CPMs 15-30% compared to either network alone.

If you are below 50K DAU, pick one network and focus on growing your user base. Mediation complexity is not worth the marginal revenue gain at small scale.

Non-gaming app? Zerocost: contextual ads + data revenue | Related: AdMob vs Zerocost | Best Monetization Platforms

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