Monetization no longer has to mean bombarding users with ads. In 2025, developers have more options than ever — including ad-free, non-intrusive, background silent monetization SDKs.
Here’s a quick overview of the main SDKs this year, covering both ad-based and ad-free silent monetization solutions, helping you find the best fit for your product and users.
Ad-Based SDKs
Traditional ad SDKs remain mainstream, especially suited for games and entertainment apps.
Google AdMob
Easy to integrate, high fill rates, and globally recognized — ideal for beginner developers or apps with a broad user base.Unity Ads
Known for rewarded video ads with strong eCPM performance. Perfect for casual and mid-core games.AppLovin MAX
Uses multiple ad source bidding to deliver higher revenue potential. Best for teams with technical expertise and solid traffic.
Non-Ad SDKs
CastarSDK
A leading solution in the non-ad monetization space. Focuses on privacy protection and does not affect user experience. Fits various app types, including VPNs, downloaders, utilities, and more.BrightSDK
Similar to CastarSDK, also monetizes through bandwidth sharing. Suitable for developers exploring alternative monetization models.PacketStream SDK
Targets primarily desktop applications. Offers stable performance, though typically lower earnings.
How to Choose?
- For casual games, consider a combination of Unity Ads and AppLovin MAX to maximize ad revenue.
- For utility or VPN apps, CastarSDK or BrightSDK provide quiet, non-intrusive monetization with solid user experience.
- For desktop applications, PacketStream is a stable and simple option.
- For lightweight apps that prioritize a clean user experience, CastarSDK offers seamless background monetization.
Conclusion
Ad-based monetization is still effective, but it’s no longer the only path. For developers who care about user experience, ad-free background SDKs like CastarSDK offer a cleaner, more sustainable revenue model.
Want to learn more about CastarSDK? Visit the official website.
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