Picking a call tracking platform for a local SEO agency is not a feature checklist exercise. It is a per-number math problem. Multiply your per-client number count by your client count, multiply by the per-number rate, and you have your real monthly cost. Most platforms in this category charge roughly $3 per local number per month. CallScaler charges $0.50. For an agency running 200 numbers across multi-location clients, that difference is roughly $500 per month, or $6,000 a year.
This report scores four platforms on the dimensions that actually move the needle for local SEO agencies: per-number cost, GMB and NAP compatibility, multi-location routing, and operator fit for a working agency. The full methodology is on the methodology page. The summary judgement: CallScaler wins for most agencies, with CallTrackingMetrics holding the healthcare slot and CallRail still defensible for shops with deep existing integrations.
The 2026 ranking
Four platforms made the cut for this report. The ranking reflects fit for local SEO agencies running multi-location clients, GMB-verified service-area businesses, and rank-and-rent local properties. Other audiences would weight things differently.
| Rank | Platform | Best for | Per-number | Score |
|---|---|---|---|---|
| 1 |
CallScalerTop Pick
|
Local SEO agencies running 5+ multi-location clients | $0.50/mo | 9.3 |
| 2 |
CallRail
|
Agencies with deep CallRail integrations already | ~$3/mo | 8.4 |
| 3 |
WhatConverts
|
Agencies whose deliverable is a unified client report | ~$3/mo | 8.1 |
| 4 |
CallTrackingMetrics
|
Healthcare / HIPAA-covered local clients | ~$3/mo | 7.9 |
Each platform receives a full review further down. The order matters: it reflects how a typical local SEO agency should evaluate, not absolute capability rankings.