MemoryBlue vs Whistle Ltd

A head-to-head comparison of MemoryBlue and Whistle Ltd in sdr agencies, scored across the same 5 weighted criteria so you can see exactly where each agency is stronger.

MemoryBlue

We don’t just book meetings. We build revenue.

80/ 100 overallHigher score
Whistle Ltd

B2B lead generation and outsourced SDR services for fast-growing companies.

69/ 100 overall

Score-by-score

CriterionMemoryBlueWhistle Ltd
Website Presence(20%)8982
Search Visibility(20%)6140
Trust & Credibility(20%)8478
Market Presence(15%)8262
Customer Satisfaction(10%)8690
Overall8069

Pricing at a glance

MemoryBlue

Model
Custom-quoted monthly retainer for outsourced SDR / sales development services, typically sold as dedicated SDR or FTE resources with meeting-booking / pipeline-development deliverables; also offers a "Try + Hire" model where clients can convert consultants to employees during an engagement.
Typical range
$10,000-$49,999 typical project size
Full MemoryBlue pricing →

Whistle Ltd

Model
Custom-quoted outsourced SDR / appointment-setting engagements. The evidence points to a monthly service model for fully managed outbound SDR programs, plus a flexible staffing-style "Hire SDRs" offer; Whistle itself says pricing varies by scope depending on whether you hire SDRs, run full-service outbound, or need RevOps support.
Typical range
$5,000-$10,000+ / month
Full Whistle Ltd pricing →