GroupSignal vs Groups Monitor
Groups Monitor, at groups-monitor.com, is a managed service: its own Facebook account joins the groups, and AI reads their posts against prompts you write. GroupSignal is a Chrome extension that reads the groups you've joined through your own account. Both match posts by intent rather than keywords alone.
At a glance
| GroupSignal | Groups Monitor | |
|---|---|---|
| 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. | Its own Facebook account joins the groups. For a private group it asks to join, and monitoring starts once an admin approves. You don't install anything or share your Facebook login. |
| 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. | Lists no schedule; says Facebook feed behavior, group permissions, network conditions and AI processing affect timing. |
| 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. | AI prompts you write in plain language, set per group, that match on intent, not keywords alone. |
| Posting and commenting | Never posts, comments, reacts or sends messages. | Its site doesn't say. |
| 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. | A dashboard, email, Slack and webhooks, each alert linking to the post. Webhooks can carry matches or every collected post. |
| Listed price | $10/month includes five group slots. Each additional slot is $2/month. Up to 25 slots. | Professional is $89/month for up to 10 groups; $389/month covers up to 50. |
| Trial | 7-day free trial, no card required. | No free trial; the first Professional charge is refundable in full within 7 days. |
Getting into private groups
For a private group, Groups Monitor's account asks to join, and monitoring starts once an admin approves. It refunds a private group it can't get into. GroupSignal reads private groups you're already a member of from the start, because it uses your own account, so there's no join request to wait on. It needs Chrome open on a computer, and nothing is checked while Chrome is closed.
How they find posts
Groups Monitor uses plain-language AI prompts set per group. GroupSignal uses monitors: two sentences saying who and what to find, and what to ignore, each applied to the groups you choose. AI reads every new post against them, by meaning and in any language (writing a monitor).
Where you see matches
Groups Monitor sends alerts to a dashboard, email, Slack and webhooks, and its webhooks can carry every post it collects. GroupSignal keeps matches in your inbox at sosaly.com, on any device, with the reason each post matched, raises a browser alert, and can send matches to Zapier or Make. Posts that don't match are discarded.
What they cost
Groups Monitor Professional is $89/month for up to 10 groups, and $389/month covers up to 50, with no free trial and a full refund of the first Professional charge within 7 days. GroupSignal is $10/month for five group slots and $2/month for each extra slot, up to 25, so 10 groups in one monitor cost $20/month. It has a 7-day free trial, no card required.
Which to choose
- Groups Monitor if your own Facebook account shouldn't be involved, your groups must be watched while no computer of yours is on, you watch more than 25 groups, or you want every collected post sent on.
- GroupSignal if you want the groups you've already joined watched through your own account, with no join request to wait on, and a lower price.
Where these facts come from
We checked what this page says about Groups Monitor 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.