Pro

1. Online Monitoring: WaStat provides real-time tracking of user online status, displaying all the intervals of their online activity, which is useful for understanding usage patterns or ensuring safety for family members.

2. Notifications: The app sends instant alerts when tracked contacts become online or offline on WhatsApp, enabling users to respond promptly to messages or monitor availability.

3. Detailed Statistics: It offers comprehensive daily, weekly, and monthly usage statistics, allowing users to analyze time spent on WhatsApp and track changes or trends in their contacts' online behavior.

Con

1. Privacy Concerns: WaStat could potentially infringe on the privacy of WhatsApp users being tracked, leading to ethical and personal data issues, especially if the users are unaware of the monitoring.

2. Inaccuracy: WaStat may not always provide accurate online/offline status information, as WhatsApp’s privacy settings or technical issues can affect the tracking reliability.

3. Dependence on Internet: The app relies on a stable internet connection to function correctly. If there is any disruption in connectivity, it may not be able to track or record the activity as intended, resulting in missing or incomplete data.