G2 Vendor Directory

Concept vs. Leadium

A side-by-side comparison based on G2 review data.

MetricConcept

by Concept

Leadium

by Leadium

Overall rating4.84.8
Review count1789
Ease of use0.010.0
Ease of setup0.07.9
Quality of support0.010.0
Meets requirements0.09.5
NPS88.23529491.011236
Small Business29.4%73.0%
Mid-Market58.8%24.7%
Enterprise11.8%2.2%
Total page views148784
Total LLM citations1792,546

Concept

Concept is a lead generation agency focused on building, developing, and growing our clients’ sales pipelines. Through multi-channel lead generation solutions, such as outbound prospecting and appointment setting, CRM consulting (HubSpot and Salesforce), and digital marketing services, we help our clients grow.

Pros

  • Problem Solving
  • Professionalism
  • Ease of Use
  • Flexibility
  • Efficiency
  • Strategic Planning

Leadium

Leadium is a boutique, 100% US-based B2B outbound sales development agency. Founded in 2016, we run managed, outsourced SDR programs across cold calling, email, and LinkedIn that book qualified meetings on your calendar. We're founder-led by design. You work directly with the people who run the company, not a junior account manager juggling 20 logos. Every client gets a dedicated, US-based SDR who learns your business, your ICP, and your value proposition, and represents you like an internal hire.

Pros

  • Data Quality
  • Understanding
  • Lead Generation
  • Strategy Innovation
  • Expertise
  • Lead Quality