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Decision Guide

Best A/B Testing Tool for Agencies

Updated December 2026
10 min read
TL;DR

For most agencies: Use ExperimentHQ for simple per-project pricing and easy client onboarding. Use Convert or VWO if you need white-label capabilities or enterprise features. Key requirements: multi-client management, visual editor, scalable pricing, and shareable reports.

Who this is for

  • Digital marketing agencies
  • CRO consultancies
  • Web development agencies offering optimization services

Who this is NOT for

  • In-house teams (see startup guide)
  • Single-client freelancers (standard plans work fine)

What Agencies Need

Multi-client management

Separate projects for each client with individual tracking

Scalable pricing

Pay per client, not per seat or traffic

Easy onboarding

Quick setup for new clients without developer dependency

Client reporting

Shareable dashboards or exportable reports

Visual editor

Make changes without accessing client code

White-label (optional)

Brand the tool as your own for enterprise clients

Tool Comparison

ToolPriceMulti-ClientWhite-LabelVerdict
ExperimentHQ$29/mo per projectBest Value
VWO$10,000+/yrBest Enterprise
Convert$699/moGood mid-market
Google Optimize 360DiscontinuedN/A

Agency Pricing Models to Watch

  • Per-seat pricing: Gets expensive fast as your team grows
  • Traffic-based pricing: Unpredictable costs, especially with high-traffic clients
  • Per-project pricing: Most predictable for agencies (ExperimentHQ model)
  • Annual contracts: Often required for enterprise tools, limits flexibility

Our Recommendation

For most agencies: Use ExperimentHQ. $29/month per project, visual editor, easy client onboarding.

For enterprise clients: Convert or VWO offer white-label options and advanced features.

Avoid: Per-seat pricing models that punish team growth.

FAQ

Can I resell A/B testing to clients?
Yes. Most tools allow agency usage. White-label tools let you brand the interface. Otherwise, you can add A/B testing as a service and manage it through your own account.
How do I bill clients for A/B testing?
Common models: (1) Include in retainer, (2) Per-test fee, (3) Monthly CRO package. With per-project tools like ExperimentHQ, you can mark up the $29/month or bundle it into your services.

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