Such behavior should be morally responsible. 1. **Violation of the obligation to inform** - When using the APP, users trust the promotional content and think that the APP is only used for personal safety and emergency assistance. Failure to clearly inform users that the collected data is used for third-party market analysis is a serious violation of the user's right to know. Users have the right to know how their data will be used. This practice of hiding the purpose deprives users of the right to decide whether to accept the use of the data. 2. **Damage to user trust** - Deceptively collecting user whereabouts data for other purposes undermines the trust relationship between users and APP developers. Once users find that they have been misled, they will have serious doubts about the credibility of the APP and even the entire developer, which may cause users to no longer be willing to use the APP, and even be wary of other products developed by the developer in the future, damaging the long-term healthy relationship between the developer and the user. 3. **May cause privacy concerns** - This concealment behavior may cause users to worry about their own privacy security. Users originally thought that the collection of personal whereabouts data was safe, but suddenly found that it might be used for other unspecified purposes, they would worry that their privacy would be leaked, and then they would feel uneasy about their security in the digital space, affecting users' confidence in digital life. 4. **Not in line with ethical standards** - Honesty and transparency are important principles in ethics. Developers have the responsibility to truthfully explain to users the purpose and scope of APP data collection and use, and other key information. This behavior of hiding the true purpose violates basic ethical norms and undermines the atmosphere of integrity and trust in the digital environment, so they should bear moral responsibility.