Pay-per-click (PPC) advertising is one of the easiest marketing channels to measure, until a customer decides to pick up the phone. Someone clicks an ad, reads a few pages of your website, and calls to make an enquiry. The sale happens, but the report your marketing team shares at the end of the month shows a click that went nowhere.
For leadership teams signing off on paid search budgets, that gap matters. Phone enquiries are often the highest-value leads a business receives, and when they go unrecorded, profitable campaigns look like a cost rather than an investment. In this article, we look at five call tracking services that close that blind spot and give decision makers a clearer view of what their advertising spend is delivering.
Why phone enquiries should count in your marketing figures
Every customer arrives at your website by a different route. Call tracking software gives each individual visitor their own dynamic phone number the moment they land, then follows their visit from page to page. When that person calls, the enquiry is attributed to the specific channel, campaign, and search term that brought them in, so you know exactly which activity generated the lead.
The commercial impact is significant. A campaign that looks expensive when judged on website forms alone may turn out to be one of the most profitable in the business once its phone leads are counted. The services below were chosen for how clearly they connect calls to spend, how much they reveal about what customers are asking for, and how easily they fit into existing reporting.
1. Mediahawk
Mediahawk is a UK call tracking and marketing attribution platform built for medium and enterprise businesses, as well as agencies, that want to see which parts of their marketing budget are producing conversations. Every website visitor receives their own number, so each call is traced back to the specific channel, campaign, keyword, and ad that prompted it.
The value for senior teams lies in how that data is used. Mediahawk call tracking software integrates with Google Ads, Google Analytics 4, Meta Ads, and Bing. Phone enquiries sit alongside online conversions in one view, so advertising spend moves towards the campaigns generating calls rather than just clicks, which suits businesses spreading budget across search and social.
Speech Analytics goes a step further, using conversational AI and natural language processing to transcribe and analyse phone call conversations. The AI picks out the words and phrases that reveal each caller’s intent and classifies the outcome of every call, and those signals can be fed back into Google Ads to inform bidding. Marketers can then interrogate the data by asking the software any question, which shows leaders which campaigns attract serious buyers and which bring in existing customers or misdirected calls.
Sales Matching then links completed sales back to their original marketing source, so return on investment can be measured campaign by campaign. A UK support team and an optional Managed Service help businesses turn those insights into budget decisions.
2. Infinity
Infinity is another UK-headquartered platform that tracks calls at individual visitor level and attributes them to the ad, search term, and channel behind them. It connects with advertising accounts across Google, Microsoft, Meta, and LinkedIn, which suits businesses spreading spend across several platforms.
Calls are tagged by intent and outcome, and that information can be shared back with the advertising platforms. Organisations running a broad media mix will value having that reporting in one place.
3. CallRail
CallRail is a popular choice among marketing agencies, particularly those looking after a large number of small and medium-sized clients. It brings call attribution, recording, transcription, and form tracking together in one dashboard.
Self-serve setup means accounts can be up and running quickly, and its conversation intelligence features summarise calls so teams spend less time listening back. Agencies rolling call tracking out across many client accounts often favour that simplicity.
4. CallTrackingMetrics
CallTrackingMetrics combines call tracking with contact centre capabilities. Interactive voice response (IVR), call routing, agent scorecards, and automated workflows all sit alongside its attribution reporting.
Integrations with Google Ads, HubSpot, and Salesforce link call data to both marketing results and the sales pipeline. This suits organisations where marketing and customer service teams share one system and want calls routed according to where the customer came from.
5. Invoca
Invoca is aimed at large enterprises running multi-channel campaigns with high call volumes. Its conversation intelligence scores calls and identifies outcomes at scale, giving large organisations a consistent way to measure call quality across regions and business units.
Onboarding runs through a sales-led process rather than self-serve signup, reflecting its focus on complex, high-volume deployments.
Making every pound of advertising spend accountable
The right service depends on how your business operates. Agencies need fast setup, contact centres need routing, and global enterprises need scale. For most organisations, however, the deciding factor is how confidently marketing spend can be linked to revenue.
When phone enquiries are tracked properly, budget conversations change. Campaigns are judged on the customers they bring in, wasted spend becomes easier to spot, and leadership can back the activity that drives growth with confidence.
