Knock vs Retool: Full Comparison (2026)
Pricing, features, scores, and a clear verdict on which one is right for you.
The bottom line
Knock positions itself as "notification infrastructure for developers" while Retool goes after "low-code platform for building internal tools" — so the right pick depends on which problem you're actually solving. Both use freemium pricing, but Knock charges per message while Retool charges per seat — a meaningful difference for larger teams.
At a glance
| Knock | Retool | |
|---|---|---|
| Our score | 84/100 | 80/100 |
| Starting price | Free | Free |
| Free tier | Yes | Yes |
| Best for | Notification infrastructure for developers | Low-code platform for building internal tools |
Pricing comparison
Calculate your cost
Feature comparison
core
| Feature | Knock | Retool |
|---|---|---|
| Multi-channel notifications | Yes | No |
| Workflow builder | Yes | No |
| User preferences | Yes | No |
| In-app feed | Yes | No |
| Template management | Yes | No |
| Drag-and-drop builder | No | Yes |
| Database connections | No | Yes |
| API integrations | No | Yes |
| JavaScript logic | No | Yes |
| Pre-built components | No | Yes |
Ratings breakdown
What the data tells us
How costs scale
Knock's pricing curve is steeper — the jump from its entry plan to its top tier is more dramatic than Retool's. If you're a growing team, model the 12-month cost at your projected team size, not just today's. Retool tends to stay more predictable as you add seats or usage.
Key capabilities you'd miss
Choosing Knock means going without Drag-and-drop builder, Database connections, API integrations (which Retool offers). Choosing Retool means losing Multi-channel notifications, Workflow builder, User preferences. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.
What company size tells you
Retool (501-1,000 employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Knock (1-10 employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.
Choose Knock if...
- You want a free tier to get started
- You value an intuitive, easy-to-use interface
- Getting strong value for money is a priority
Choose Retool if...
- You want a free tier to get started
- You value an intuitive, easy-to-use interface
- You need enterprise-grade capabilities
Frequently asked questions
Is Knock or Retool better?
Knock scores 84/100 compared to Retool's 80/100 on VendorVS. However, the best choice depends on your needs — Knock excels at ease of use (9/10) while Retool scores 8/10.
How much does Knock cost compared to Retool?
Knock starts at free (free tier available). Retool starts at free (free tier available). Knock is the more affordable option.
Does Knock or Retool have a free plan?
Yes, both Knock and Retool offer free tiers, so you can try each before committing to a paid plan.
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