GroupSignal vs Groups Watcher
Groups Watcher started as a Chrome extension and is now a managed service that watches groups from its own Facebook accounts. GroupSignal is a Chrome extension that reads the groups you've joined through your own account. That one difference shapes the rest.
At a glance
| GroupSignal | Groups Watcher | |
|---|---|---|
| What it is | Chrome extension | Managed service |
| How it reads your groups | Reads the groups you choose, private ones included, through the Facebook account signed in to your Chrome. Your Facebook login stays in your browser. | Watches groups from its own servers and Facebook accounts. You don't install anything, share your Facebook login or need to be in the group. |
| When it checks | Continuously while Chrome is open on your computer and signed in to Facebook, one group after another at a steady pace. When Chrome opens again, it catches up on posts from up to the last 24 hours. Alert times vary. | Says it checks every monitored group every 60 seconds, whether or not your computer is on. |
| How it finds posts | AI reads each new post against what you describe in plain language, by meaning and in any language, with no keywords. | Keywords to include or exclude, or every post, with optional AI scoring of each post's intent. |
| Posting and commenting | Never posts, comments, reacts or sends messages. | Its site doesn't mention posting or commenting for you. |
| Where you see matches | An online inbox at sosaly.com on any device, including your phone, with the reason each post matched. Browser alerts, and Zapier or Make webhooks sent from Sosaly's servers. | Email, Slack, Discord, Microsoft Teams, Google Chat, SMS and webhooks. |
| Listed price | $10/month includes five group slots. Each additional slot is $2/month. Up to 25 slots. | Professional is $99/month for 25 groups, plus $4/month for each extra group. |
| Trial | 7-day free trial, no card required. | No free trial; a 7-day money-back guarantee. |
Your account or theirs
Groups Watcher no longer recommends Chrome extensions, saying they can get your Facebook account banned. Its service keeps your account out of it: you don't install anything, share your Facebook login or need to be in the group, and it runs whether or not your computer is on.
GroupSignal works through the Facebook account signed in to your Chrome, so it reads what you can see, private groups included, and no one else holds your login. No tool can promise how Facebook treats an account, because Facebook sets its own rules. GroupSignal reads only the groups you choose, one at a time with pauses between them, at a steady pace you can't speed up, and waits longer whenever Facebook asks it to slow down. It needs Chrome open on a computer, and nothing is checked while Chrome is closed.
Replying to posts
Groups Watcher's site doesn't mention posting or commenting for you, and GroupSignal never posts, comments, reacts or sends messages. Either way, you decide whether a post is worth answering and reply yourself (how to reply within a group's rules).
How they find posts
Groups Watcher matches keywords you include or exclude, or alerts on every post, and can add an AI score for each post's intent. GroupSignal uses no keywords: you describe who and what to find, and what to ignore, and AI reads every new post against that, by meaning and in any language.
When they check
Groups Watcher says it checks every monitored group every 60 seconds. GroupSignal reads your groups continuously while Chrome is open and signed in to Facebook, one after another at a steady pace, and alert times vary. When Chrome opens again, it catches up on posts from up to the last 24 hours.
What they cost
Groups Watcher Professional is $99/month for 25 groups, plus $4/month for each extra group, with no free trial and a 7-day money-back guarantee. GroupSignal is $10/month for five group slots and $2/month for each extra slot, up to 25, so 25 groups in one monitor cost $50/month. It has a 7-day free trial, no card required.
Which to choose
- Groups Watcher if your groups must be watched while no computer of yours is on, or your own Facebook account shouldn't be involved.
- GroupSignal if you want the groups you've already joined, private ones included, watched through your own account, posts matched by meaning, and a lower price.
Where these facts come from
We checked what this page says about Groups Watcher on , against the tool's own pages below. Prices and features change, so check them before you decide. GroupSignal's side comes from our GroupSignal and pricing pages.