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Phone Number Monitoring

Hammer alternative

The Hammer Alternative for Teams Who Want to See the Price First

If you need IVR testing you can price, trial and start today, Phone Number Monitoring is the simpler buy. If you need to load-test a contact centre under concurrent call volume, Hammer is the right tool and we are not. That is the honest dividing line, and it decides most evaluations between the two.

Hammer is an enterprise contact-centre testing platform, originally from Empirix and now sold by Infovista as part of the VistaCX line. Its historic strength is load and performance testing at scale, sold through enterprise and carrier channels.

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By Jacob Hall, Lead Site Reliability Engineer. Hammer information checked against publicly available sources on September 14, 2026; where they publish nothing, this page says so rather than estimating. Phone Number Monitoring and Dotcom-Monitor are sister companies that operate independently.

Phone Number Monitoring vs Hammer

 Phone Number MonitoringHammer
Published pricingYes. Full rate card online. $9.99–$100.75/mo Basic, $199.99–$1,108.46/mo Premium, credits $0.05–$0.124.None published. On the review date the pricing URL returned a 404 and the only route we could find was a quote-request form.
Self-serve trialYes. 30 days, no credit card, no sales call.None found. Directory listings record no free trial and every evaluation route we found was a demo request.
Time to first testMinutes. Add a number, set a schedule, done.After a scheduled call and scoping.
IVR tree navigation, DTMFYes, on the Premium Plan.Yes, and a long-standing strength.
Load and stress testingNo. Functional testing only; concurrency is capped per account by design.Yes. This is what Hammer was originally known for.
Voice quality measurementYes. Dual-line audio comparison scoring clarity, distortion, latency, packet loss, noise and volume.Yes, via the synthetic monitoring product.
Buying motionSelf-serve, month to month, cancel anytime.Enterprise, frequently via carriers and systems integrators.
Public reviewsFew. We are a small company and have not run a review campaign.Effectively none. The Capterra listing shows 0 reviews and is unclaimed; TrustRadius carries at most one.
Brand continuitySame name, same product, since 2012.Empirix → Hammer → Infovista VistaCX. Product names changed with it.

Which one you should actually buy

Where each of us wins, including the cases where we are the wrong choice.

Choose Phone Number Monitoring if…

  • You want to know the price before you take a call, and to start the same afternoon.
  • Your estate is tens of numbers, not thousands, and an enterprise agreement is out of proportion to the problem.
  • You need continuous production monitoring with escalation more than you need a pre-release test lab.
  • You want month-to-month billing rather than an annual commitment.
  • You would rather evaluate a product than evaluate a proposal.

Choose Hammer if…

  • You need load and stress testing. This is the real dividing line. Hammer was built for it and we deliberately are not. Our concurrency is capped per account so monitoring stays light on your systems. If the question is what happens at 500 simultaneous callers, we are the wrong tool and will say so.
  • You are testing pre-deployment in a lab rather than monitoring production, and you need deep protocol-level instrumentation.
  • You already buy Infovista for network assurance and want CX assurance on the same paper.
  • You are procuring through a carrier or systems integrator who already resells it.

What each one costs

Phone Number Monitoring

Published in full, and you can work out your bill before speaking to anyone.

Basic from $9.99/mo for 5 lines. Checks whether the number is reachable and answering.
Premium from $199.99/mo for 5 lines. Adds IVR tree navigation with DTMF, hold-time tracking, audio quality, export and API.

Plus call credits: 1 per US or Canada call, 1–6 international, $0.05–$0.124 each depending on volume. A six-branch IVR walked twice daily runs roughly $230/mo all in.

Full rate card

Hammer

Not published. The pricing page returns a 404 and the only path is a quote request, so we will not put a number here. Inventing a competitor's price would make everything else on this page less trustworthy.

What can be said factually: it is sold as an enterprise platform, frequently through carriers and systems integrators, which normally means annual commitments and a scoping exercise before you see a figure.

Ask them directly, and ask specifically what the figure includes. Port counts and test volumes are where enterprise telecom quotes usually move.

What we checked, and when

Everything on this page about Hammer was read from public sources on September 14, 2026. Vendors change their sites; where a claim here no longer matches what you find, theirs is current and ours is stale. Tell us and we will correct it.

  • Their pricing page and the quote-request form, checked directly.
  • Capterra and TrustRadius listings for review counts.
  • The hammer.com and empirix.com redirect behaviour.
  • Their own product pages for load testing and IVR capability.

What we could not confirm

  • Actual contract pricing. They publish none, and we will not estimate it.
  • Whether a trial exists through a sales conversation. We only checked public routes.

Where this page says a competitor does not have something, it means we could not find it published, not that we have proof it does not exist. Where we have direct evidence, the page says so explicitly.

Frequently asked questions

Is Hammer still called Hammer?
Not officially. Hammer came from Empirix, and after Infovista acquired the business it was folded into a product line branded VistaCX. The hammer.com domain still redirects, but the product names have changed. If you are searching for Hammer documentation or pricing, that is why the trail goes cold.
What is the biggest practical difference?
Load testing, and the buying motion. Hammer can generate concurrent call volume to stress a contact centre; Phone Number Monitoring deliberately cannot, because it is built to monitor production continuously without loading it. On buying, our pricing is published and the trial is self-serve; theirs is a quote and a demo.
Does Phone Number Monitoring do everything Hammer does for IVR testing?
For functional IVR testing, meaning walking menu trees with DTMF or recorded audio, validating the response at each step, checking prompt content, measuring connect and hold times, and alerting when a branch breaks, yes. For load generation and lab-grade protocol instrumentation, no.
Why do you mention their review count?
Because buyers ask, and because it is checkable. On the review date shown on this page, the Capterra listing we found showed no reviews and TrustRadius showed at most one. That may have changed since, so check for yourself. The honest summary is that neither of us can point you at a large body of public feedback.
Can I run both during an evaluation?
Yes, and it is the fastest way to decide. Our 30-day trial needs no credit card, so a parallel run costs nothing. Point both at the same numbers and compare what each one tells you, and how quickly.

Comparing other vendors too?

Most teams shortlist three or four. The rest of the category, compared the same way.

Phone Number Monitoring vs Cyara

Cyara sells CX assurance as an enterprise platform, priced on request. An honest comparison, including where Cyara clearly wins.

Phone Number Monitoring vs IR

IR watches your whole UC estate from the inside. We watch the numbers customers dial, from the outside. Published pricing, 30-day trial.

Phone Number Monitoring vs Klearcom

Klearcom sells IVR and number testing by consultation, with no published prices. An honest comparison, including where Klearcom clearly wins.

Phone Number Monitoring vs Occam

Occam sells IVR testing and discovery by demo request, with no published pricing. An honest comparison, including where Occam wins.

Phone Number Monitoring vs Spearline

Spearline is now part of Cyara. If your monitoring moved with it, here are your options, including the case for staying put.

Phone Number Monitoring vs TelcoAlert

Both publish prices and skip the sales call. Which is cheaper flips on cadence and line count. The worked maths for both is here.

Or read the underlying capability pages: IVR monitoring,IVR testing,automated IVR testing andline quality monitoring.

Try it before you renew with Hammer

Thirty days, no credit card, no sales call. Run both side by side and keep whichever tells you more.

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