Retool vs Windmill: Which is Better in 2026?
Choosing between Retool and Windmill 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.
Bottom line: Retool wins this matchup. Our overall App Builders pick is Zapier Interfaces. Our free App Builders pick is Ionic. Pick Windmill if you need developer tools.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Retool
Build internal tools, apps, and AI with drag-and-drop
Best for you if:
- • You need app builders features specifically
- • Low-code internal tools builder
- • Connect to any database or API
Windmill
Open-source developer platform for scripts
Best for you if:
- • You need developer tools features specifically
- • Windmill is an open-source developer platform for internal tools
- • It runs scripts and workflows with a visual builder
| At a Glance |  Retool |  Windmill |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | App Builders | Developer Tools |
Rating | 4.6/5 | 4.9/5 |
Free plan | Yes | Yes |
Choose Retool or Windmill?
Choose Retool if
Build internal tools, apps, and AI with drag-and-drop
- Fast development
- Many integrations
- Powerful for internal tools
- Your work is app builders-shaped, not developer tools-shaped
Choose Windmill if
Open-source developer platform for scripts
- Open source workflow engine
- Scripts and flows
- Self-hostable
- Your work is developer tools-shaped, not app builders-shaped
| Feature | Retool | Windmill |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.6/5 394 reviews | ★4.9/5 15 reviews |
| Categories | App BuildersInternal Tools | Developer ToolsApp Builders |
In-Depth Analysis
Retool
Build internal tools, apps, and AI with drag-and-drop
Retool is the most polished internal tool builder but pricing escalates quickly.
Watch out
End-user pricing ($7-18/mo per user) adds up fast, 50 end users on Business = $900/mo just for viewers
Strengths
- +Fast development
- +Many integrations
- +Powerful for internal tools
Weaknesses
- -Internal tools only
- -Can get expensive
Key features
Windmill
Open-source developer platform for scripts
Windmill's pricing is very generous, offering a fully functional self-hosted Free tier.
Strengths
- +Open source workflow engine
- +Scripts and flows
- +Self-hostable
- +Good UI
- +Active development
Weaknesses
- -Learning curve
- -Documentation improving
- -Smaller community
- -Enterprise features limited
- -Setup complexity
Key features
Pricing: Retool vs Windmill
| Plan | Retool | Windmill |
|---|---|---|
| Tier 1 | $0 Free | N/A |
| Tier 2 | $9/user/month Team | N/A |
| Tier 3 | $46/user/month Business | N/A |
| Tier 4 | Custom Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Retool pricing and Windmill pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Retool
Want the highest-rated option?
Retool: 4.6/5 (394 reviews). Windmill: 4.9/5 (15 reviews).
Go with: Windmill
Value user reviews?
Retool: 394 reviews (4.6/5). Windmill: 15 reviews (4.9/5).
Go with: Retool
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Retool is a app builders tool. Windmill is in developer tools. Pick the category that matches your needs.
How important are ratings?
Windmill is rated higher: 4.9/5 vs 4.6/5.
Key Takeaways
Retool
- Larger review base (394 reviews)
- Free tier available
- Our pick for this comparison
Windmill
- Higher user rating: 4.9/5 vs 4.6/5
- Better fit for developer tools
The Bottom Line
Retool wins this matchup. Our overall App Builders pick is Zapier Interfaces. Our free App Builders pick is Ionic.
Frequently Asked Questions
Is Retool or Windmill better?
Retool is rated in our evaluation. Both are freemium.
What are Retool and Windmill used for?
Retool: Build internal tools, apps, and AI with drag-and-drop. Windmill: Open-source developer platform for scripts.
What does Retool cost vs Windmill?
Retool is freemium (free tier + paid plans). Windmill is freemium (free tier + paid plans). Visit their websites for detailed pricing.