WhatsApp does not send any native notification when a friend goes online. To see their status on line, just start a conversation: it's free and instant. If you want a automatic alert Without opening the app, you have to go through third-party applications.
We'll explain both methods, along with their limitations and the risks you should be aware of before monitor online presence from a contact at WhatsApp.

Which application can I use to find out if someone is online on WhatsApp?
To receive notifications as soon as a contact logs in to WhatsApp, you have to go through third-party applications. Here are the three most popular solutions:
| Application | Advantages | Disadvantages | Note |
|---|---|---|---|
| WhatsMonitor |
|
|
4,5/5 |
| WaControl |
|
|
4,4/5 |
| WhatsDog |
|
|
4,3/5 |
1. WhatsMonitor

WhatsMonitor is one of the most popular apps for monitor online presence from your contacts on WhatsApp. It is available at android via the Google Play Store and sends a notification as soon as a contact logs in. Here's how to use it:
- Open the Google Play Store and look for WhatsMonitor.
- Download the app on your phone. The first time you open it, it asks you to sign up and accept its terms of use. This account is a WhatsMonitor, not your WhatsApp account.

- Once connected, Add your friend's number to follow his activities on WhatsApp, then select their country before confirming.

After a few minutes of checking, you receive a notification as soon as your friend is online on WhatsApp. The alert appears at the top of the screen on your phone and enter the contact's number.
You have 3-day free trial. After this period, you must sign up for a fee-based offer to continue receiving alerts.
2. WaControl

Designed For Android only, the application WaControl offers more in-depth tracking of the online presence on WhatsApp.
You can view the last login time a contact's online status and the time intervals between their online sessions, and receive a notification when he logs out.
Another advantage: it allows you to Monitor up to 10 WhatsApp profiles at the same time. To use it:
- Go to the Google Play Store to install the app on your phone.
- Grant him the necessary authorizations (including notifications), then opens the contact list.
- Tap the icon + in the upper right corner of the screen.

- Add the phone number to be continued, including the contact's country code.
- Enter the contact's name as it appears on WhatsApp, then check their online status.

WaControl then provides you with detailed reports on your phone: online status, last seen, active hours. You receive a notification whenever the status of the contact being tracked changes.
3. WhatsDog

WhatsDog works on the same principle: you receive a Notification when a friend logs in on WhatsApp. Be careful, though—the app has been removed from the official lists on several occasions for violating Meta's rules. As of August 2026, it can no longer be reliably downloaded from the Play Store or the App Store. If you do manage to find it, here's what to do:
- Download and installs WhatsDog from an official app store, only if it's available.
- Open the app on your phone and accept the permit applications.
- Select contacts of which you'd like to receive a alert as soon as they pass online on WhatsApp.

Once you've completed these steps, you'll receive the login notifications friends selected right on your screen.
How do I know if my friend is online on WhatsApp?

If you'd rather avoid third-party apps, there are several built-in ways to see if a friend is logged in to WhatsApp. The common flaw: none automatic notification. You'll have to open the app yourself to check. You might also be wondering how to see who is online without being seen on WhatsApp.
Check the status in the conversation
The fastest way is still to open your chat. At the top of the screen, under the contact's name, you'll see the message «online» if he uses WhatsApp at that very moment.
Please note : If you haven't yet never discussed This method doesn't work with that person. You have to start a conversation first to view their status. A contact can also hide one's online presence in their privacy settings, in which case you won't see anything.
Watch the gray checkmarks turn blue
You can send a message to detect an active connection. There are two possible scenarios:
- The gray cars indicate that the message has been sent and received, but not yet read.
- The blue cars mean that your contact has read the message: so they are connected at that moment.
Just because a friend is online doesn't mean they'll read your message right away. It's still a reliable indicator its presence on WhatsApp.
Check replies on WhatsApp
When a person answers If she replies to your message, that's a sign that she's logged in on WhatsApp. If your message has gone unanswered for several days, take advantage of this opportunity to reconnect and get the conversation going again.
FAQs

What are the risks of using a third-party app to see if a friend is online on WhatsApp?
These third-party applications do send a notification when your contact logs in, but they come at a real cost in terms of security:
- Disclosure of Your Personal Data and those of the targeted person, since you're granting access to the accounts in question.
- Violation of WhatsApp's Terms of Service, which may result in your account being restricted or suspended.
- Risk of malware, especially when the app is no longer available on official app stores and must be installed via a third-party file.
Remember to carefully weigh these risks Before installing a third-party app to get notified when a friend logs in to WhatsApp. Use these tools only for monitor contacts with their consent.
What features are included in these apps' notification system?
These apps send a notification on your phone as soon as one of your contacts logs in to WhatsApp. That way, you know exactly when the person is available to chat. Depending on the app, you can also access a dashboard with reports on login times, or even export this data in the format PDF.
Why can't I see if the person is online on WhatsApp?
Several reasons may explain why the status online on WhatsApp If a contact doesn't appear on your screen:
- You don't have not synchronized your contacts.
- You or the other person changed your privacy settings to hide your online status.
- The other person has blocked.
- The person is not registered as contact on your phone.
- You don't have never exchanged messages with her on WhatsApp.
- the network is experiencing a temporary connection issue.
When you block someone on WhatsApp, can you see them online?
No. If you block someone, you can't see anymore its online status, updates, or any of its activities on WhatsApp. Similarly, the contacts you've blocked can no longer see your online presence or your updates.
On the other hand:
- The contact is not not deleted from your mailing list, if you've communicated with them before.
- You can delete discussion or archive it so it no longer appears in your conversations.
To learn more about this topic, read our article: All about WhatsApp blocking.
If you have any questions, please ask them in the comments area.






