The short answer: buying signals software watches for evidence that an account has started moving, a champion changing job, a funding round, engagement on a competitor's post, a second visit to your pricing page, then turns that evidence into something a rep can act on. The category splits three ways on price. Execution tools that act on a signal you already have start at $69 per user per month, with Overloop in that band. Dedicated signal sources run from $20 per seat per month up to $150,000 a year for job change tracking. And five well-known names, 6sense, Bombora, Demandbase, Lead Forensics and Pocus, publish no price at all.
What the price sheets actually say
- The published range runs from $20 per seat per month (Unify Base) to $150,000 a year (UserGems Elite). On a three-seat team that is a spread of more than 200 times inside one category.
- Five tools have a real free tier: Clay, RB2B, Leadfeeder, Koala and Unify. Four of the five cap volume rather than features, which makes them usable for a real test.
- Warmly sells signals as an add-on. The base plan starts at $10,000 a year and the GTM Signals Package is a further $10,000 a year, so switching signals on doubles the entry cost.
- UserGems publishes implementation fees of $3,000 to $10,000 on top of the annual licence, plus $3,000 for retroactive job change leads.
- Five vendors publish nothing: 6sense, Bombora, Demandbase, Lead Forensics and Pocus. Not a tier, not a range, not a starting point. Budgeting requires a sales call.
How this comparison was built
This is a desk comparison, not a hands-on test. On August 22, 2026 every vendor's own pricing page was read and the figures transcribed as published, including the billing period and the credit or seat limits attached to each tier. Where a vendor publishes no figure, that is recorded as published rather than estimated, because an unpublished price is itself a buying consideration.
No performance claim in this article is sourced from a vendor marketing page. Signal coverage is described from the vendor's own product documentation. Currency is reproduced as shown, which is why Leadfeeder appears in euros.
Buying signals software compared on published price
| Tool | What it watches | Published entry price | Top published tier | Free tier | Best fit |
|---|---|---|---|---|---|
 Overloop |
Execution layer: takes a signal list and runs email plus LinkedIn sequences | $69/user/mo | $99/user/mo, then custom | No, paid plans only | Teams whose bottleneck is acting on the signal, not finding it |
 Trigify |
LinkedIn social listening: post engagement, topic monitoring, tracked accounts | $40/mo | $199/mo, then custom | 14-day trial, no free tier | Small teams whose signals come from LinkedIn activity |
 Clay |
Data orchestration with signal triggers built from many sources | $54/mo billed annually | $185/mo annually, then custom | Yes, 500 actions and 100 data credits a month | Operators who want to compose their own signal logic |
 RB2B |
Person-level identification of anonymous US website visitors | Free, then $79/mo | $199/mo | Yes, 150 resolutions a month | Teams whose strongest signal is their own website traffic |
 Leadfeeder (Dealfront) |
Company-level website visitor identification with intent filtering | Free, then EUR 79/mo | EUR 599/mo | Yes, last 100 companies a month | European teams that want visitor identification with GDPR footing |
 Koala |
Product and website intent scoring for product-led motions | Free, then $200/mo | $1,000/mo, then custom | Yes, 100 credits and two seats | Product-led companies scoring in-product behaviour |
 Common Room |
Multi-source signal capture across social, community, product and web | $2,500/mo billed annually | Custom | No | Larger revenue teams consolidating many signal sources |
 Warmly |
Web de-anonymisation, inbound chat and social signal monitoring | $10,000/yr | $30,000/yr | No | Inbound-heavy teams that want de-anonymisation plus chat |
| UserGems | Job change tracking and champion movement across your CRM | $3,333/mo ($40,000/yr) | $12,500/mo ($150,000/yr) | No | Enterprises with large CRM histories and champion-led motions |
 6sense |
Predictive account intent and buying-stage modelling | Not published | Not published | No | ABM programmes with named account lists and CRM discipline |
 Bombora |
Third-party research topic intent from a publisher co-operative | Not published | Not published | No | Teams feeding topic intent into an existing ABM stack |
 Demandbase |
Account intelligence, intent and advertising in one platform | Not published | Not published | No | Enterprises buying one platform across marketing and sales |
 Unify |
Warm outbound built on website, research and social signals | Free, then $20/seat/mo | $60/seat/mo, then custom | Yes, limited credits and three seats | Teams that want signals and sequencing on one seat-based price |
 Albacross |
Company-level website identification with European data coverage | EUR 59/mo billed yearly | EUR 149/mo, then custom | 14-day trial, no credit card | European teams that need identification plus verified contact credits |
| Lead Forensics | Website visitor identification priced on traffic volume | Not published | Not published | Demo then trial | Teams that want unlimited users on a traffic-based contract |
 Pocus |
Product-led signal scoring and account research agents | Not published | Not published | Waitlist | Product-led teams with usage data already instrumented |
Two patterns are worth naming before the detail. First, the cheap end of the category is not the weak end: social listening at $40 a month and website identification at $79 a month cover the two signal families most small teams can actually act on. Second, the expensive end is narrow, not broad. UserGems at $40,000 a year tracks one signal family, job change, extremely well. Price in this category tracks contract size and data licensing, not signal count.
1. Overloop
What it watches: Execution layer: takes a signal list and runs email plus LinkedIn sequences
Starter is $69 per user per month with 250 credits, one mailbox per user and three campaigns. Growth is $99 per user per month with 500 credits, three mailboxes and the published HubSpot and Pipedrive integrations. Enterprise is a custom price with 1,000 credits per user, unlimited mailboxes and campaigns, and the Salesforce integration. All tiers include the 450M contact database, email verification and LinkedIn steps.
Where it stops: Overloop does not generate third-party intent data. It is the layer that turns a signal you already have into sequenced outreach.
Price source: Overloop pricing page, read August 22, 2026.
2. Trigify
What it watches: LinkedIn social listening: post engagement, topic monitoring, tracked accounts
Starter is $40 a month with 4,000 credits, 25 listening searches, 25 workflows and two seats. The top tier is $199 a month with 40,000 credits, 100 listening searches, five seats and 50,000 tracked accounts. Enterprise is custom with 200,000 or more credits. Overage is billed at $0.012 per credit.
Where it stops: Coverage is social. There is no web-visitor identification and no third-party research intent.
Price source: Trigify pricing page, read August 22, 2026.
3. Clay
What it watches: Data orchestration with signal triggers built from many sources
The free tier gives 500 actions and 100 data credits a month. Launch starts at $54 a month billed annually, or $167 monthly, for 15,000 actions and 3,000 data credits. Growth starts at $185 a month annually, or $446 monthly, for 40,000 actions and 6,000 data credits. Enterprise is custom with 200,000 or more actions.
Where it stops: Clay is a build-it-yourself surface. The signal quality is whatever you wire into it, and credits are consumed per action.
Price source: Clay pricing page, read August 22, 2026.
4. RB2B
What it watches: Person-level identification of anonymous US website visitors
The free plan resolves 150 visitors a month at company level and pushes to Slack, with no person-level identification and no email addresses. Starter is $79 a month for 300 resolutions with LinkedIn URLs. Pro is $149 a month and adds business email addresses and all integrations. Pro plus is $199 a month with premium resolution. A seven-day full-featured trial is offered on every tier.
Where it stops: Identification is focused on United States traffic, so European pipelines see thinner coverage.
Price source: RB2B pricing page, read August 22, 2026.
5. Leadfeeder (Dealfront)
What it watches: Company-level website visitor identification with intent filtering
Lite is free forever and shows the last 100 identified companies a month with seven days of history and unlimited users. Discover is EUR 79 a month billed annually, or EUR 113 monthly. Activate is EUR 369 a month annually, or EUR 527 monthly, and adds verified emails and intent signal filtering. Scale is EUR 599 a month on annual billing with free company data export and a dedicated CSM.
Where it stops: Identification is company level, not person level, so the rep still has to pick the contact.
Price source: Leadfeeder (Dealfront) pricing page, read August 22, 2026.
6. Koala
What it watches: Product and website intent scoring for product-led motions
The free plan includes 100 credits a month and two seats with the full feature set. Starter is $200 a month for 1,000 credits and two seats. Growth is $1,000 a month for 5,000 credits and three seats, with a fourteen-day trial. Business is custom. Every tier carries the same features and differs on credits, seats and support.
Where it stops: Strongest where you have product usage to read. Thin if your motion is pure cold outbound.
Price source: Koala pricing page, read August 22, 2026.
7. Common Room
What it watches: Multi-source signal capture across social, community, product and web
Essential is $2,500 a month billed annually and includes five seats, up to 100,000 contacts, 5,000 RoomieAI research credits and 2,500 Prospector credits. Advanced is a custom price with fifteen seats and up to 250,000 contacts. Enterprise is custom with thirty seats and up to 750,000 contacts.
Where it stops: Entry price is $30,000 a year before any seat expansion, which puts it out of reach for most teams under twenty reps.
Price source: Common Room pricing page, read August 22, 2026.
8. Warmly
What it watches: Web de-anonymisation, inbound chat and social signal monitoring
AI Web-Deanonymization is $10,000 a year, Inbound Chat is $20,000 a year and AI Inbound Autopilot is $30,000 a year, each from 10,000 credits a month. Quarterly billing is $4,875, $6,500 and $9,750 respectively. The GTM Signals Package is a separate add-on at $10,000 a year, and Warm Experiences is another $10,000 a year.
Where it stops: Signals are an add-on, not part of the base plan. Adding them to the entry tier doubles the annual cost.
Price source: Warmly pricing page, read August 22, 2026.
9. UserGems
What it watches: Job change tracking and champion movement across your CRM
Core is $3,333 a month, billed as $40,000 a year. Advanced is $6,250 a month, or $75,000 a year. Elite is $12,500 a month, or $150,000 a year. One-time implementation fees are $3,000, $5,000 and $10,000 respectively, and retroactive job change leads cost a further $3,000 on every tier.
Where it stops: One signal family, priced at enterprise level. Job change alone rarely justifies the floor for a team under a hundred reps.
Price source: UserGems pricing page, read August 22, 2026.
10. 6sense
What it watches: Predictive account intent and buying-stage modelling
The pricing page names three packages, Sales Intelligence with Data Credits and Predictive AI, Sales Intelligence with Data Credits, and Sales Intelligence with Predictive AI. No figure appears against any of them. The only route to a number is Book Your Demo.
Where it stops: You cannot budget for it from the website, and the model is an annual enterprise contract.
Price source: 6sense pricing page, read August 22, 2026.
11. Bombora
What it watches: Third-party research topic intent from a publisher co-operative
No plan names and no figures appear on the pricing page. The calls to action are Request a demo and Speak to an expert.
Where it stops: Bombora is a data feed, not a workflow. Something else has to route and action the topic surge.
Price source: Bombora pricing page, read August 22, 2026.
12. Demandbase
What it watches: Account intelligence, intent and advertising in one platform
The page describes a platform fee plus a flat fee per user, and states that Demandbase One is not split into separate solutions. No dollar figure is published. Pricing requires a form submission.
Where it stops: Bundled by design, so you cannot buy the signal layer on its own.
Price source: Demandbase pricing page, read August 22, 2026.
13. Unify
What it watches: Warm outbound built on website, research and social signals
The free plan carries limited credits and up to three seats. Base is $20 per seat per month with 800 credits per seat. Pro is $60 per seat per month with 2,400 credits per seat and a fourteen-day trial. Business is a custom annual price with a shared credit pool. Top-up credits do not auto-renew and carry over for up to twelve months.
Where it stops: Credit consumption is the real cost driver, so per-seat pricing understates the bill on high-volume workspaces.
Price source: Unify pricing page, read August 22, 2026.
14. Albacross
What it watches: Company-level website identification with European data coverage
Starter is EUR 59 a month billed yearly, or EUR 84 monthly, for up to 100 identified companies a month with ten verified email credits and five phone credits. Professional is EUR 149 a month yearly, or EUR 213 monthly, for up to 500 companies with unlimited outreach sequences and LinkedIn Ads integration. Organisation is custom on annual billing only, from 501 companies upward. Extra email credits run from EUR 0.30 down to EUR 0.16 depending on volume.
Where it stops: Identification is company level and the included contact credits are small, so most teams pay again for contact data.
Price source: Albacross pricing page, read August 22, 2026.
15. Lead Forensics
What it watches: Website visitor identification priced on traffic volume
Two tiers are named on the pricing page, Essentials and Automate, with no figure against either. The page states that pricing is calculated based on your website visitors and that unlimited users are included. The route to a number is a demo followed by a trial.
Where it stops: Traffic-based pricing means your bill rises with marketing success, and you cannot model it before the call.
Price source: Lead Forensics pricing page, read August 22, 2026.
16. Pocus
What it watches: Product-led signal scoring and account research agents
No pricing table, plan names or figures appear. The page offers Join Waitlist and Take a tour as the only actions.
Where it stops: Access itself is gated by a waitlist, so it is not an option you can evaluate on your own timeline.
Price source: Pocus pricing page, read August 22, 2026.
Turning a signal into a reply, not a dashboard
The tool you pick decides what you can see. It does not decide whether anyone acts. Four things sit between an alert and a booked meeting, and no signal source solves them for you.
- Deduplicate against the CRM. A signal on an account already in an open opportunity is a note for the owner, not a new sequence.
- Score for urgency, not just fit. A second pricing-page visit inside a week is a different object from a topic surge measured over a month.
- Route to one accountable owner. Alerts that land in a shared channel belong to nobody.
- Write the signal into the opener. If the message would read the same without the signal, the signal bought you nothing.
That last mile is where most signal spend leaks. If your bottleneck is acting on signals rather than sourcing them, Overloop's sales prospecting software page covers how a list becomes a sequenced email and LinkedIn campaign, with the credit limits and CRM availability per plan.
What the price spread actually tells you
A range of $20 per seat per month to $150,000 a year inside one category is not a sign of confused buyers. It is three different products wearing one label.
The cheap band buys observation. Trigify, Unify, RB2B, Albacross, Leadfeeder and Koala all watch one surface well: LinkedIn activity, or your own website, or your own product. They are cheap because the data is either public or already yours. Nobody is licensing a panel on your behalf.
The middle band buys consolidation. Common Room at $2,500 a month and Warmly from $10,000 a year are paying for breadth across social, web, product and community, plus the plumbing to reconcile a person across all of them. That reconciliation is genuinely hard, and it is what the money buys.
The expensive band buys a licence. UserGems at $40,000 a year, and the gated vendors, are selling access to data you cannot observe yourself: a research panel, a co-operative of publishers, a continuously maintained graph of who moved where. The price reflects a data supply contract, not a software margin.
Read your own situation against those three bands before comparing feature lists. If your buyers leave traces on surfaces you already own, the cheap band is not a compromise, it is the correct answer. If your category is researched quietly on third-party sites, no amount of website tooling will show it to you, and the licence is the only route.
How to test a signal source in two weeks
Most signal purchases are decided on a demo, which is the worst possible evidence. The demo shows you the tool working on a mature account with clean data. Here is a cheaper test that uses the free tiers listed above.
- Week one, instrument what you already own. Turn on Leadfeeder Lite and RB2B Free at the same time. Together they cost nothing and cover company-level plus person-level identification. If your traffic produces fewer than twenty recognisable target accounts in seven days, your website is not yet a signal source, and no paid tier changes that.
- Week one, in parallel, list the signals you would act on. Write them down before you see any data. A champion moving to a target account. A competitor page gaining followers. A second pricing visit inside five days. If you cannot name five, the problem is the play, not the tooling.
- Week two, act on twenty signals by hand. No automation. One rep, twenty manual messages that reference the signal explicitly. Track replies against your normal cold baseline.
- Then price the gap. If manual outreach on real signals does not beat your cold baseline, buying a bigger signal source amplifies a play that does not work. If it does beat it, you now know what a signal is worth to you in replies, and you can compare that against $20 a seat or $40,000 a year with an actual number instead of a feeling.
The reason this test is rare is that it produces an answer a vendor cannot influence. It is also the only way to know which of the three price bands above you belong in.
Which one should you actually buy
If your signals come from LinkedIn and you have fewer than ten reps, Trigify at $40 a month is the cheapest dedicated social listener, and Unify at $20 per seat per month is cheaper still if you also want the sequencing on the same bill. Both offer a fourteen-day trial.
If your signals come from your own website, start with the free tiers. Leadfeeder gives you the last 100 companies a month at no cost and RB2B resolves 150 visitors a month at no cost. Between them you will know within a fortnight whether your traffic carries enough intent to pay for.
If you already have signals and nothing happens with them, the problem is not another source. It is the execution layer, and that band starts at $69 per user per month.
If a vendor will not publish a price, treat that as data. All five of the gated vendors sell real capability, and all five require a sales cycle before you can compare them on cost. That is a reasonable trade at enterprise scale and a poor one below it. Lead Forensics goes further and prices on your traffic volume, so the bill grows as marketing succeeds.
Frequently asked questions
What is buying signals software?
Buying signals software monitors public and first-party behaviour for evidence that an account has started a buying process, then turns that evidence into an alert. Typical signals are a champion changing job, a funding round, engagement on a competitor's LinkedIn post, a repeat visit to a pricing page, or a research topic surge. The software's job is detection and routing. Acting on the alert is a separate layer.
How much does buying signals software cost?
Published prices in August 2026 run from $40 a month for Trigify Starter to $150,000 a year for UserGems Elite. Website identification sits between free and EUR 599 a month. Multi-source platforms start at $2,500 a month for Common Room and $10,000 a year for Warmly. Execution tools that act on signals you already have start at $69 per user per month. 6sense, Bombora and Demandbase publish no figure.
Is there free buying signals software?
Yes, four of the twelve tools compared here have a genuine free tier. Clay gives 500 actions and 100 data credits a month. RB2B resolves 150 website visitors a month at company level. Leadfeeder Lite shows the last 100 identified companies a month. Koala gives 100 credits and two seats. All four cap volume rather than features, which makes them usable for a real test.
What is the difference between buying signals and intent data?
Intent data is one kind of buying signal. It usually means third-party research behaviour, aggregated from publisher networks, and it is reported at account level with a lag. A buying signal is the wider category and includes first-party events you can observe directly, such as a website visit, a job change, or engagement on a post. First-party signals are timelier and narrower. Third-party intent is broader and blunter.
Which buying signal is the most reliable?
Signals you observe directly on your own property are the most reliable, because there is no modelling between the behaviour and the alert. A second visit to a pricing page is a fact. A topic surge is an inference. Job change is reliable as an event but noisy as a trigger, since title changes inside the same company produce false positives and LinkedIn data carries a lag of days to weeks.
What is the cheapest buying signals software?
Unify Base at $20 per seat per month is the cheapest paid tier in this comparison, and Trigify Starter at $40 a month is the cheapest dedicated social listening tool. Below that, five tools have free tiers that are genuinely usable for a test: Clay, RB2B, Leadfeeder, Koala and Unify. Cheapest is not weakest here, because the low band watches surfaces you already own.
Why do some vendors not publish pricing?
Five of the sixteen tools compared here publish no figure: 6sense, Bombora, Demandbase, Lead Forensics and Pocus. Two reasons recur. Vendors licensing third-party data have variable input costs, so they price per contract. And vendors selling to enterprise buyers price on seats, volume and negotiated terms. Lead Forensics states plainly that the price is calculated on your website visitor volume.
Does buying signals software replace an SDR?
No. Signal software changes which accounts a rep contacts and when. It does not write the message, run the follow-up, or handle the reply. Teams that expect a signal source to reduce headcount usually find alerts accumulating unactioned, because detection and execution are separate jobs with separate tooling.
How many signals should a team track at once?
Fewer than most tools let you configure. A signal you cannot staff is noise with a timestamp. A practical starting point is three: one from a surface you own, such as website visits, one relationship signal such as engagement on a competitor's page, and one company event such as funding or a key hire. Add a fourth only when the first three are consistently actioned within a day.
Is website visitor identification legal in Europe?
Company-level identification from IP data is widely used in Europe, and vendors such as Leadfeeder and Albacross market specifically to European teams on that basis. Person-level identification is more constrained and RB2B's own product is focused on United States traffic. Treat the vendor's stated coverage as the practical answer for your market and take the compliance question to your own counsel rather than to a vendor page.
Do I need both a signal source and an outreach tool?
In most stacks, yes. Signal sources detect and route. They do not source contact data, verify addresses, write the opener or run the follow-up sequence. Teams that buy only a signal source often find alerts accumulating with nobody acting on them, which is why the execution layer is usually the cheaper half of the stack and the half that decides whether the spend pays back.
You have the signal. Now send something worth reading.
Overloop turns a signal list into sequenced email and LinkedIn outreach, with sourcing, verification and reporting in one place. Starter is $69 per user per month.
