Boosting App Revenue Without Writing More Code

In the crowded app marketplace, monetization is often tied to complexity: more ads, more features, more subscriptions. But for many developers and product teams, adding new features isn't always feasible. Time, resources, or simply product constraints can make “doing more” a costly option.
So — what if you could increase your app’s revenue without writing more code?
That’s exactly what CastarSDK enables. It’s a lightweight, privacy-respecting SDK that helps apps generate passive income by securely using idle network bandwidth from users’ devices. No ads. No popups. No UI changes. Just background activity — and background revenue.
Integration is quick, often under an hour, and once running, it requires no further maintenance. It works silently alongside your existing monetization methods like ads or subscriptions, making it a seamless layer of additional income.
For apps with stable DAU and limited monetization options, this offers a new revenue path — one that doesn’t compromise user experience or burn engineering time.
Sometimes, the smartest growth move is simply letting your app keep working — even when no one’s watching.