Comparison · checked 4 September 2026

Lead alert tools for contractors, compared

Six ways to hear about a neighbor asking for your trade. We make one of them, and it is listed here with the same limits stated as everyone else’s — including who it is wrong for.

Every price and limit below was read off the vendor’s own live page or structured data. Where a vendor does not publish a price, this page says so instead of repeating a figure from somewhere else.

Tool	Price	Sees private groups?	Whose account	Best for
LeadHunter USAoursFacebook groups + Nextdoor	$75/moflat, all areas	Yesthe ones you have joined	Yours, read-only	A solo pro already active in local groups
LeadhallNextdoor, and public Facebook surfaces	$99/moper city — their own structured data says "Per city, per month"	Nopublic surfaces only	Nobody’s — scans from outside	Nextdoor-heavy areas, nothing installed
Groups WatcherFacebook groups + Nextdoor	Not publisheddemo-gated; their page schema still carries a $199 figure	Yesthey join with their own accounts	Theirs	Wanting someone else to reply, county locked
OtomizerFacebook groups only	$1,200/mocounty-exclusive done-for-you; a self-serve tier is listed at $89/mo	Yestheir own aged accounts	Theirs	Buying an outcome rather than an alert
Nextdoor Opportunity AlertsNextdoor only	Not publishedon the product page	N/ANextdoor only	Nobody’s — first-party	One or two categories inside 20 miles
One Stop SocialFacebook groups	$29/mothe cheapest option in the category	Yesvia a Chrome extension in your browser	Yours, in your everyday browser	The cheapest way in, if you keep a browser open
Devi AIFacebook, LinkedIn, X, Reddit, Nextdoor	Not verified herewe did not confirm current pricing on their site	Not verified here	Not verified here	Marketing across several networks at once

The middle column decides more than price does. Most active neighborhood groups are private, so a tool watching from outside is working from a fraction of the volume — one vendor’s own published report puts Facebook at about 3% of what they see. And “whose account” is where the risk actually sits: three of these reach private groups using logins that are not yours.

LeadHunter USA

ours

Watches groups you have joined, signed in as you

A desktop app on your own machine watches the local groups you are already a member of and your own Nextdoor feed, and pushes a matching request to your phone. It is read-only: it never posts, comments, likes or messages, and it does not contact the lead for you.

Because it runs on your own membership, it sees private groups you have joined — which is where a lot of the "anyone know a good plumber?" volume actually sits.

When it is the wrong tool: It is the wrong tool if you want someone else to do the replying, if you want exclusive territory, or if you are not already a member of active local groups. It gives you the post and the link — the conversation is yours to have.

Leadhall

Scans public content from outside; never logs into your accounts

Their own words: "Unlike Chrome extension competitors, Leadhall never logs into your accounts or scrapes from your browser." That is a genuine safety argument and worth taking seriously.

It is also the constraint. Watching from outside means public pages and public groups only — a private group you belong to is invisible to them. Their own weekly demand report for 3 September 2026 shows what that costs: of 335,916 requests tracked, 324,791 were Nextdoor and 11,125 came from social groups. Facebook is about 3% of what they see.

The headline price needs reading twice. $99 is per city, so covering three metros is roughly $297 a month.

When it is the better choice: If Nextdoor is where your customers are and you want nothing installed on your machine, this is a straightforward answer and their FAQ is unusually honest — including "What happens if I am slow to respond? You will lose to whoever was first."

Leadhall→

Groups Watcher

They join groups using their own accounts

The most established content operation in this category by a distance — 59 blog posts and nine landing pages built around search phrases. If you have read anything about monitoring Facebook groups, you have probably read one of their pages.

The product has moved upmarket. The homepage now sells a done-for-you service that comments on the homeowner’s post on your behalf, with "one home service company per niche, per county", and the public pricing page is gone.

How they get access matters and they state it plainly: they request to join groups with their own established accounts, and can publish a predefined comment automatically.

When it is the better choice: If you want somebody else to do the watching and the first reply, and you want your county locked so no competitor can buy the same service, this is the one built for that. It is a different product from an alert tool.

Groups Watcher→

Otomizer

They post a recommendation naming your company, from their own accounts

Their homepage puts it in one line: "Exclusive coverage in your county. We recommend you in the groups where homeowners already ask." They are not alerting you — they are answering on your behalf, from accounts they run.

They have built the largest site in this category: 1,546 URLs, of which 1,515 are county-level pages across eight trades, each around 1,300 words with local population and household figures.

Their own how-it-works page states they do not cover Nextdoor.

When it is the better choice: If you would rather buy an outcome than a notification, have the budget for it, and want nobody else in your county, this is the most complete version of that. It is also the furthest from a tool you operate yourself.

Otomizer→

Nextdoor Opportunity Alerts

First-party — the platform alerting you about its own posts

Nextdoor sells this itself, which makes it the most reliable source of Nextdoor alerts that exists: no third party in the middle, nothing to break when the site changes.

The limits are on their own page and they are firm. Thirty-two service categories exist and you may select up to three. Alerts cover a 20-mile radius from one address. Your business must be eligible in a supported category.

And it is Nextdoor only. Nothing from a Facebook group reaches it.

When it is the better choice: If your work is one or two categories inside a 20-mile radius and Nextdoor is busy where you are, buying from the platform itself is the least fragile option on this page.

Nextdoor Opportunity Alerts→

One Stop Social

A browser extension that scans while your browser is open

Their own description: "One Stop Social is a Chrome extension that monitors Facebook groups for keywords around the clock." It covers public and private groups — because it is you, logged in, in the browser you already use — and runs scheduled scans across up to 25 groups.

The extension is the whole trade-off. It is the cheapest way to see private groups, and it is also the architecture that other vendors in this category market against, because it acts inside your normal browser session rather than a separate one. It also stops when your browser does.

When it is the better choice: If $29 is the number that decides it and you are at a computer most of the day anyway, this is the least expensive route into private groups that exists. Ask them how the extension behaves in your session before installing it — that is the question worth asking of any extension, ours included in spirit.

One Stop Social→

Devi AI

Multi-platform social listening with AI replies

The broadest coverage of anything here, and the least specific to trades. It watches several networks at once and can draft replies with AI.

That breadth is the trade-off. A tool built for social listening across five platforms is not tuned for "homeowner in your ZIP asking for a plumber", and you will do more filtering.

When it is the better choice: If you are marketing across several networks rather than chasing local service requests, its range is the point and the trade-specific tools will feel narrow.

Devi AI→

The question that actually sorts these

Not price. How the tool gets inside the group, and whether it speaks once it is there.

A tool watching from outside can only see public posts, and the numbers show what that costs: Leadhall publishes a weekly demand report, and the one dated 3 September 2026 records 324,791 Nextdoor mentions against 11,125 from social groups. Their Facebook side is about 3% of what they see, because most neighborhood groups are private.

A tool that joins with its own accounts sees more, and takes on a different kind of risk — it is a stranger in a neighborhood group, sometimes commenting under your company name.

A tool that runs on your own membership sees exactly what you would see, and nothing else. That is LeadHunter’s answer, and it is a real limit as much as a feature: if you are not in the groups, there is nothing to watch.

LeadHunter USA — $75 a month flat, every area, every lead, yours alone. Read-only: never posts, comments or messages. 7 days free, no credit card.

Start free — 7 days Every lead channel, compared What a lead costs

Common questions

What is the difference between these tools?

Mostly one thing: how they get access, and whether they speak for you. Some watch from outside and see only public content. Some join groups with their own accounts and can comment on your behalf. LeadHunter runs on your own membership and never posts. That single choice decides what a tool can see, what it costs, and how much risk sits with you.

Which one sees private Facebook groups?

Only tools that are inside the group. LeadHunter is inside because you are — it watches groups you have already joined, signed in as you. Groups Watcher and Otomizer are inside because they joined with accounts they operate. Tools that scan from outside, like Leadhall, see public surfaces only, which is why their own reported volume is roughly 97% Nextdoor.

Will any of these get my Facebook or Nextdoor account banned?

Ask each vendor exactly how they get access before you buy. Some never touch your account at all. Some ask you to install a browser extension that acts as you. LeadHunter uses its own isolated session on your machine, is read-only, and paces itself like a person — it never posts, comments or messages. Nothing here is a guarantee, and any vendor who gives you one is overselling.

Which is cheapest?

On sticker price, the self-serve tiers are close. What separates them is what the price covers. LeadHunter is $75 a month flat across every area you configure. Leadhall's $99 is per city. Otomizer's done-for-you service is $1,200 a month for county exclusivity. Compare what one month buys, not the headline.

How current is this page?

Every figure was read off each vendor’s own live page or structured data on 4 September 2026. Where a vendor does not publish a price, this page says so rather than repeating a number from somewhere else. Prices and products in this category change often — check before you buy.

Corrections welcome. If you run one of these products and something here is out of date, write to support@leadhunterusa.com and we will check it and change it.