Connect inbound phone calls to the ads, keywords, and campaigns that prompted them, using dynamic number insertion to show each source its own number.
Call attribution software links an inbound phone conversation back to the marketing activity that produced it. The main differences are how numbers are assigned, whether attribution reaches the keyword or visitor-session level, how offline and online touches are combined, and what happens after the call. Some platforms emphasize lead management; others add conversation analysis or enterprise journey reporting. None of them is the overall winner; each entry says where it fits.
By SEM Solutions Editorial Team. Researched from vendor documentation, not hands-on testing. Ordered by Overall Score. Checked October 7, 2026. How we research
For calls plus other lead types
#1 of 6 in Call Attribution
WhatConverts approaches attribution from the lead itself, so the phone call is one source among several. It tracks calls alongside forms, chats, and ecommerce transactions, then attributes those leads back to marketing campaigns.
For multi-source lead attribution
#2 of 6 in Call Attribution
CallRail connects calls, texts, and forms to marketing sources, using call tracking and dynamic number insertion to show where leads came from. Its lead-centered workflow is useful for businesses that want paid media and web activity tied to phone outcomes without building a separate analytics stack; integrations with Google Ads, Google Analytics 4, HubSpot, Salesforce, and Meta extend that attribution into common marketing systems.
Detailed online-to-call paths
#3 of 6 in Call Attribution
CallTrackingMetrics uses dynamic number insertion and number pools to connect calls with source, campaign, ad, keyword, landing page, and session context. Consider it when marketers need call attribution to feed campaign optimization, not remain a reporting-only metric. Multi-touch and offline tracking extend beyond a single last-click source, while conversion marking can send qualified outcomes back to advertising platforms.
Enterprise revenue attribution
#5 of 6 in Call Attribution
Invoca connects digital marketing journeys with phone conversations and downstream outcomes, pairing call tracking with conversion attribution and conversation intelligence. Choose it when you need to understand both which campaign caused a call and what happened in the conversation; integrations with advertising, data, and CRM systems make the call another measurable step in a wider revenue journey.
Campaign-focused call attribution
#6 of 6 in Call Attribution
WildJar combines dynamic call tracking with recordings, conversation intelligence, routing, and attribution reporting. Its role on this page is strongest where marketers want inbound calls assigned to campaigns and then evaluated for outcome or quality. Connections with Google Ads, Google Analytics, HubSpot, and Salesforce help carry call information into the rest of a marketing and sales reporting stack.
Ranked by Overall Score: our Editor Rating and Market Signal, 50/50. Market Signal uses Ahrefs and Semrush data through September 2026, pulled October 6 to 12, 2026. How we score
Lead tracking platform attributing calls, forms, chats, and transactions to marketing campaigns.
Best for: Agencies and marketers that need one attribution view across calls, forms, chats, and ecommerce leads.
Lead attribution platform tracking calls, texts and forms back to the campaigns behind them.
Best for: Advertisers whose leads arrive by phone and form and who need each lead credited to the campaign behind it.
Call tracking and contact-center platform combining attribution, routing, automation, and conversation analytics.
Best for: Agencies and service businesses that need call attribution plus routing and contact-center workflows.
Call tracking suite with DNI, AI conversation analysis and routing.
Best for: Agencies and multi-location businesses that need detailed call attribution with configurable AI analysis and routing.
Revenue intelligence platform connecting digital marketing journeys with calls, conversations, and offline outcomes.
Best for: Enterprise marketing and contact-center teams that need to connect advertising spend with phone-driven conversions and revenue.
Call tracking and conversation intelligence platform focused on attribution, recordings, and lead outcomes.
Best for: Marketing teams and agencies that need campaign-level call attribution and analysis of inbound lead conversations.
A common method is dynamic number insertion. The website displays different tracking numbers based on visitor source or session. When a visitor calls, the platform connects that number with the marketing data captured before the call.
Some platforms can send qualified call conversions or outcomes back to advertising systems. That matters when the goal is to report which campaign produced a call and also to teach bidding systems which calls became valuable leads.
Yes, Nimbata offers a free plan. Free tiers usually come with usage limits, so check whether they cover your volume before relying on them long-term.
Among the tools listed here whose main product is in this category and whose pricing we've verified, WhatConverts has the lowest listed starting price: $30/mo + usage. Starting price isn't the whole picture, so check what's included at that tier before deciding.