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MarTech Audit

Free marketing tech stack audit tool. Compare marketing tools, score your stack, and find the best martech solutions for your business.

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MarTech Audit — Free marketing technology stack comparison tool. Built in Phoenix, AZ. Data verified March 2026.

Sponsored by Helios AI Services — Custom AI tools for small businesses.

Tools/Customer.io vs Keap (formerly Infusionsoft)

Customer.io vs Keap (formerly Infusionsoft)

Side-by-side comparison to help you choose the right marketing automation tool for your stack.

Quick Verdict

Rating

Customer.io

Reviews

Keap (formerly Infusionsoft)

Price

Tie
Customer.iopaid
Keap (formerly Infusionsoft)paid
Rating
4.5 / 5
4.2 / 5
Reviews
957
2,700
Best For
Product-led SaaS companies and tech-savvy teams that need behavior-driven, multi-channel messaging automation
Established small service businesses that want CRM, automation, and invoicing in one platform
Pricing
From $100/mo
From $249/mo
Free Plan
No
No
Setup Time
days
days
Learning Curve
moderate
steep
Zapier
Yes
Yes
Integrations
5 tools
10 tools

Customer.io

4.5 / 5957 reviews

G2 Satisfaction Scores

Ease of Use
8.4
Ease of Setup
7.8
Quality of Support
8.8
Meets Requirements
8.6
Ease of Admin
8.2
Likely to Recommend
8.6

Rating Distribution

5 star
56%
4 star
34%
3 star
6%
2 star
2%
1 star
1%

+ Event-driven automation — trigger messages based on any user behavior, not just email opens

+ Multi-channel messaging (email, push, SMS, in-app, webhooks) from one workflow builder

- $100/mo starting price is steep for early-stage businesses

“Customer.io transformed our onboarding. We trigger emails, push notifications, and in-app messages based on exactly what users do in our product. Our activation rate jumped 35% in the first quarter.”

Keap (formerly Infusionsoft)

4.2 / 52,700 reviews

G2 Satisfaction Scores

Ease of Use
7.1
Ease of Setup
6.6
Quality of Support
8.4
Meets Requirements
8.2
Ease of Admin
7.0

Rating Distribution

5 star
67%
4 star
20%
3 star
5%
2 star
2%
1 star
5%

+ All-in-one: CRM, email, automation, invoicing, and appointment scheduling

+ Powerful automation for small service businesses with complex workflows

- Very expensive starting at $249/mo; highest entry price in this category

“Keap does everything but it's not cheap and it's not pretty. If you're a service business doing $500K+ revenue, the all-in-one value proposition works. Below that, look elsewhere.”
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