Knock Knock App vs Reply.io: Which Should You Choose in 2026?
Choosing between Knock Knock App and Reply.io comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Knock Knock App
Turn website visitors into paying customers with AI voice and chat agents and live video calls.
Best for you if:
- • You need lead generation features specifically
- • AI agents track visitor behavior and identify high-intent leads in real-time.
- • Proactively engages hot leads via AI voice/chat and connects to sales via live video.
Reply.io
Sales engagement and automation platform
Best for you if:
- • You want the higher-rated option (8.2/10 vs 0.0/10)
- • You need marketing automation features specifically
- • Reply.io is a sales engagement platform for automated outreach
- • It creates multichannel sequences across email, LinkedIn, and calls
| At a Glance |  Knock Knock App |  Reply.io |
|---|---|---|
Price | Paid | Paid |
Best For | Lead Generation | Marketing Automation |
Rating | —/100 | 82/100 |
| Feature | Knock Knock App | Reply.io |
|---|---|---|
| Pricing Model | Paid | Paid |
| Editorial Score | — | 82 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Lead GenerationSales Engagement | Marketing AutomationSales Engagement |
How Knock Knock App and Reply.io Compare
Knock Knock App
Turn website visitors into paying customers with AI voice and chat agents and live video calls.
Paid
Reply.io
Sales engagement and automation platform
Paid · 82/100 score
Knock Knock App is a lead generation tool. Reply.io is in marketing automation.
Who Should Use What?
On a budget?
Both are paid. Compare plans on their websites.
Go with: Reply.io
Want the highest-rated option?
Reply.io scores 82/100. Knock Knock App is unrated.
Go with: Reply.io
Value user reviews?
Neither has user reviews yet.
Go with: Reply.io
3 Questions to Help You Decide
What's your budget?
Both are paid. Pricing won't help you decide here.
What's your use case?
Knock Knock App is a lead generation tool. Reply.io is in marketing automation. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Reply.io
- Higher score: 82/100 vs unrated
- Our pick for this comparison
Knock Knock App
- Better fit for lead generation
The Bottom Line
Reply.io (82/100) is our pick.
Frequently Asked Questions
Is Knock Knock App or Reply.io better?
Reply.io scores 82/100 in our evaluation. Both are paid.
What are Knock Knock App and Reply.io used for?
Knock Knock App: Turn website visitors into paying customers with AI voice and chat agents and live video calls.. Reply.io: Sales engagement and automation platform.
What does Knock Knock App cost vs Reply.io?
Knock Knock App is a paid tool. Reply.io is a paid tool. Visit their websites for detailed pricing.