Flux vs KiCad:
Choosing the Right
PCB Design Software
A comparison between KiCad and Flux covering features, AI tools, collaboration, and workflow. Choose which one fits your needs.
Try Flux for Free
KiCad vs Flux at a Glance
KiCad is a free, open-source PCB design suite that runs on Windows, Mac, and Linux. It's been community-built since 1992 and is one of the most widely used open-source hardware tools in the world. Its community of contributors, plugin developers, and library maintainers has made professional PCB design accessible to everyone.
Flux is a different category of tool. It's an AI hardware engineer that works alongside you across the entire development process. Describe what you want to build. Flux generates architectures, selects components from real inventory, wires schematics, lays out boards, runs design reviews, and routes traces. It's browser-based with real-time collaboration. Free trial available. Paid plans from $20/mo.
Both can take a design from schematic to manufacturing files. The difference is in how you get there.
Try Flux for FreeFlux Vs KiCad Feature Comparison
A quick side-by-side look at Flux and KiCad features to see
which tool fits your PCB design workflow best.
When Flux Is The Right PCB
Design Tool
Flux isn't just KiCad with a nicer interface. It's a different category of tool:
an AI hardware engineer that assists across the entire development
process. Here's when that matters.
You Want An AI Partner Across The Entire Design Process
KiCad gives you separate manual tools. You drive every decision alone. Flux is an AI hardware engineer that works with you end-to-end: generating architectures, selecting components from real inventory, wiring schematics, reviewing designs for errors, routing boards, and answering questions about your specific constraints. The AI is integrated into every step.
You Need To Collaborate In Real Time.
KiCad has no multiplayer editing. Flux works like Google Docs: multiple people on the same board simultaneously, with comments, permissions, and version history built in.
Component Research Eats Your Time.
In KiCad, finding the right part means cross-referencing datasheets and checking distributor stock. Flux's AI searches real inventory with pricing and suggests alternatives when parts go out of stock.
Your Team Is Distributed.
KiCad projects live on one machine by default. Flux projects live in the cloud with shareable URLs, permission controls, and automatic version history.
Switching From KiCad
To Flux
If you're considering moving from KiCad to Flux, here's what the transition looks like.
Import Your KiCad Project into Flux
KiCad Project Import
Flux supports direct KiCad project import on all plans. Your schematics, footprints, and board layouts transfer over. No manual recreation.
Library Compatibility
KiCad symbols and footprints import into Flux's shared library. You can also access Flux's continuously updated library with pricing, stock data, datasheets, and 3D models already attached.
What You Keep
All manufacturing file exports work the same: Gerbers, BOM, pick-and-place files compatible with any manufacturer. No lock-in.
Learning Curve
If you know KiCad, you already understand PCB design concepts. Flux's interface is different (browser-based, unified workspace), but the AI Copilot helps bridge the gap. Most KiCad users are productive in Flux within a single session.
Choose KiCad If
- You need offline-only access
- Value open-source tools and community
- Want full control over your toolchain
- Prefer local file management
- Need zero-cost licensing at any scale
Choose Flux If
- You want an AI hardware engineer
- Need real-time collaboration
- Are new to PCB design
- Want a browser-based workflow
- Need integrated component data with pricing and stock
14-day free trial. Paid plans start at $20/mo.
Use Both If
Many engineers contribute to KiCad's open-source ecosystem while using Flux for collaborative or AI-assisted projects. The KiCad import feature makes moving between them straightforward. Using both supports the open-source community while gaining access to AI-powered workflows.
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What Engineers Are
Building With Flux
From first-time builders to experienced pros. Real PCB designs
shipped with Flux.
Designed and manufactured the entire product in Flux, taking it from concept to production without external EE help. The device raised $187K on Indiegogo.
Launched a vending machine business despite having almost no background in electronics. Used Flux to design boards and bring hardware to market quickly.
Built IoT-enabled organ-on-chip platforms for drug discovery and biological barrier modeling. Chose Flux for its ease of use and faster workflow.
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Start your free trial. Risk free. Cancel anytime.
Starter
AI chat and task completion
10 ACUs/month included
$2.50 per additional ACU
Up to 50 private projects
Unlimited public projects
KiCad part import
Pro
AI chat and task completion
100 ACUs/month/editor included
$2 per additional ACU
Unlimited private projects
Up to 20 editors per project
KiCad part import
Altium & Cadence project import
Teams
AI chat and task completion
100 ACUs/month/editor included
$2 per additional ACU
Pooled ACUs
All Pro features
Shared team workspace
Centralized billing
Enterprise
Hidden workspaces
Enhanced privacy & security
Advanced export formats (JEP30, more coming soon)
SOC2
SLA (2 hr response time, 24 hr unblock time)
Security audits
Vendor signup
Invoiced billing
Frequently Asked Questions
Quick answers to common questions about Flux and KiCad, including features, pricing, and workflow differences.
They're different tools for different needs. KiCad is a free, open-source project that's been community-built for over 30 years. It's one of the most important tools in the open-source hardware ecosystem. Flux is a browser-based platform with an AI hardware engineer built in. If you value open-source tooling, work offline, or want full control over your toolchain, KiCad is excellent. If you want AI assistance across the entire design process, real-time collaboration, or you're new to PCB design, Flux is the stronger choice.
Yes. Flux supports direct KiCad project import on all plans, including Starter and Pro. Schematics, footprints, and board layouts transfer over.
Yes. KiCad is open-source and completely free for personal and commercial use with no restrictions. Flux offers a 14-day free trial on all plans, with paid plans starting at $20/mo.
KiCad has no built-in real-time collaboration. Git integration enables non-realtime collaboration and version control. Flux supports real-time multiplayer editing, shareable URLs, comment threads, and permission controls.
Flux is an AI hardware engineer that works across the entire development process. It understands your project context (components, connections, datasheets, constraints). It generates architectures from natural language descriptions, selects components with real pricing and stock data, wires schematics, runs design reviews, answers questions about your specific board, and handles auto-routing. 66-75% of Flux users actively use it.
Yes. Enterprise-grade encryption, private by default on paid plans. You control sharing and permissions. KiCad stores everything locally, so security depends on your own file management.
KiCad is free. Flux offers a 14-day free trial on all plans. Paid plans are $20/mo (Starter) and $142/mo per editor (Pro). Students and educators get Pro for free. Both Flux and KiCad are significantly cheaper than legacy tools like Altium ($7K+/year).
Flux users include software engineers building their first hardware product, founders prototyping without an EE, experienced electrical engineers who want AI-assisted routing, and distributed teams that need real-time collaboration.
Yes. Flux supports unlimited public projects on all plans, including Starter. Public projects in Flux are shareable, forkable, and visible to the community. Flux also imports KiCad projects directly, so open-source designs created in KiCad can be continued in Flux. If open-source licensing of the tool itself matters to you, KiCad is the right choice. If you want to create open-source hardware with AI assistance, Flux supports that workflow.