Top 6 SDK Monetization Solutions You Should Know About in 2025

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 is easy to integrate, has high fill rates, and is globally recognized—ideal for beginner developers or apps with a broad user base.

Unity Ads is 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, suited for teams with some technical expertise and larger traffic volumes.

Non-Ad SDKs

CastarSDK is a leading player in this space, focusing on privacy protection without impacting user experience. It fits various app types, including VPNs, downloaders, utilities, and more.

BrightSDK is similar to CastarSDK and also monetizes through bandwidth sharing, suitable for developers looking to explore this model.

PacketStream SDK primarily targets desktop applications, offering stable performance but with relatively lower earnings.

How to Choose?

If you build casual games, consider combining Unity Ads with AppLovin MAX to maximize ad revenue. For utility or VPN apps, CastarSDK or BrightSDK provide quiet monetization with great user experience. Desktop apps can look into PacketStream. For lightweight apps that prioritize user experience, CastarSDK’s silent monetization is an excellent choice.

Conclusion

Ads remain an effective monetization method but are no longer the only option. For developers who value user experience, ad-free background silent monetization SDKs like CastarSDK offer a cleaner, more sustainable revenue path.

Want to learn more about CastarSDK? Visit the official website!