If not used properly, push notifications can have negative effects on your mobile app growth. They can cause users to ignore, delete, or uninstall your app if they are too frequent, irrelevant, intrusive, or annoying. Additionally, they can damage your reputation and trust if they are misleading, spammy, or inaccurate. To prevent these issues, you should respect the users' privacy and preferences by asking for their permission and consent before sending push notifications. Additionally, you should provide the users with options to customize and manage their push notification settings. Furthermore, it is important to follow the guidelines and regulations of the platforms and devices you are using to send push notifications. Lastly, be honest and transparent about the purpose and content of your push notifications and avoid false or exaggerated claims.