In 2025, with the decline in users’ acceptance of ads, the emergence of ad blocking tools, and the continuous tightening of platform policies, the drawbacks of ad monetization have become increasingly obvious, and eCPM has been declining year after year. Finding new sustainable monetization solutions has become a common demand of developers and operation teams.

CastarSDK is the new choice for developers at present.

Current Market Challenges

In the past few years, advertising has been one of the main ways for mobile apps to monetize. However, times have changed. The traditional advertising market is currently facing a variety of difficulties, and developers and applications have also encountered various problems:

● Advertising eCPM continues to decline, and the input and return are not proportional

● Users’ aversion to advertising has led to a decline in app retention

● Platform policies are constantly evolving, privacy compliance reviews are becoming increasingly stringent, and both integration and operational costs have risen significantly.

In such a predicament, developers are in urgent need of a new monetization model that does not require advertising, does not interfere with users, and obtains stable income in a legal and compliant manner.

CastarSDK: Innovative Monetization Solutions

CastarSDK does not display ads, insert rewarded videos, or track users. It is an application monetization solution based on network resource sharing. Its core mechanism is to use the idle public network connection capabilities of user devices to provide distributed bandwidth support for global network service providers.

For developers, this means:

● Zero ad placement required — no content display, no need to modify the UI.

● Zero user interference, silent background operation throughout the process, no pop-up windows and jump ads, no interference with the normal operation of the application

● Zero privacy risk, compliance and transparency, no collection of any personal data of users, in line with privacy protection regulations such as GDPR and CCPA

● Consistent and substantial revenue, unaffected by external factors, can be used for a long time

Compatible with Other Monetization Solutions

CastarSDK has strong compatibility and can coexist with existing advertising SDKs, subscription systems, in-app purchase modules and other mainstream monetization methods without changing the original monetization plan and application design. It has the core features of “silent operation, no UI resource occupation, and no interference with user behavior”. It works independently in the background and will not conflict with the operation process of other SDKs, nor will it affect the performance of the application.

For this reason, CastarSDK is not a “two-choice” solution to replace advertising or in-app purchases, but a supplementary solution to the existing monetization system. Inactive periods with low advertising eCPM, low conversion user groups, silent users, non-paying users, etc. are all places where CastarSDK can continue to play its value.

Simple and Risk-Free Integration

CastarSDK has a low access threshold, supports multiple platforms, and provides exclusive technical support for partners. Developers can complete the initial access in just a few minutes, and can observe the operating status and revenue data through the background. There is no risk, and you can terminate it at any time if you are not satisfied, and it will not affect the operation of the application and the normal use of users.

At the same time, CastarSDK basically does not require subsequent maintenance costs, and one integration can benefit you for life, bringing long-term stable income to developers.

Make CastarSDK Your Revenue Turning Point

In 2025, developers need not only a monetization tool, but also a sustainable, low-intrusion solution with good user experience. As an innovative monetization solution, CastarSDK can bring substantial revenue to developers while coexisting with existing monetization solutions, filling the income gap of developers. It is the best choice for more and more developers.