WhatsApp Online Tracker
Know the moment your contacts come online
Last Seen Monitor is a WhatsApp online tracker that sends you real-time notifications when your contacts come online. Instead of opening WhatsApp repeatedly to check if someone is available, you receive an instant alert the moment they appear online — so you can reach out at the right time.
What you get with Last Seen Monitor
Real-time online alerts
Get a notification the instant a contact comes online on WhatsApp. No more refreshing the app to check if someone is available.
Monitor multiple contacts at once
Track every contact who matters to you from a single dashboard, each with its own alert stream and history.
Availability history
View a complete, timestamped log of when your contacts were online so you can learn their patterns and find the best time to reach out.
Custom alert rules
Get notified only when it matters — when someone stays online longer than a threshold, or only during the hours you choose.
Frequently asked questions
How does a WhatsApp online tracker work?
A WhatsApp online tracker monitors the public online status of the WhatsApp contacts you add to your dashboard. When a contact's status changes to online, the tracker sends you an instant notification so you know they are available to chat.
Is it legal to track WhatsApp online status?
You are responsible for ensuring your use of Last Seen Monitor complies with applicable local laws. Last Seen Monitor accesses only publicly available online status information and does not access private messages or call data. If you are unsure about the rules in your region, consult a legal professional.
Can you see when someone is online without opening WhatsApp?
Yes, Last Seen Monitor lets you see when a contact is online without opening WhatsApp. The tracker monitors their status in the background and sends you a notification, so you never have to open the app to check.
Start getting WhatsApp alerts in minutes
Create your account and start getting notified when your WhatsApp contacts come online. 7-day free trial — no hidden fees.
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