What is Flux?

Flux is online PCB design software for hardware startups, electronics engineers, and product teams. Teams can develop schematics, lay out printed circuit boards, run simulations, and check design rules in a web browser, without installing a desktop EDA application.

The AI assistant supports component research, schematic generation from a plain-language circuit description, component placement, trace routing, and design review. Engineers remain responsible for setting constraints and approving the final design.

Flux supports simultaneous editing, project comments, and access permissions for collaborative hardware development. Teams can reuse community designs and parts, check live component prices and availability, and prepare manufacturing outputs including Gerber, BOM, and pick-and-place files.

For migration, Flux imports Altium ASCII and Cadence EDIF schematic files, plus KiCad component libraries. PCB layouts are not included in these imports.

Trial access includes a limited AI allowance. After the trial, editing or exporting private projects and using AI require a paid subscription. AI usage is metered in Agent Compute Units (ACUs), with included allowances varying by plan. Public-project and community access remain available.

Pricing

Price Starts At:
$50/month (billed monthly)
Price Overview:
USD. Monthly billing: Explore $50/month; Build $100/month; Pro $250/month. Annual billing (monthly equivalents): Explore $40/month; Build $80/month; Pro $200/month, billed annually. Teams $158/editor/month, or $120/editor/month billed annually. Enterprise: custom pricing.

14-day free trial with limited AI usage; selected plan starts afterward unless canceled. After the trial, editing or exporting private projects and using AI require a paid plan. Public-project/community access remains available. Pro trial requires a $250 hold (monthly) or $200 hold (annual).

AI usage is metered in Agent Compute Units (ACUs). Explore includes 40 ACUs/month; Build 120; Pro 400. Optional pay-as-you-go AI usage on Build and Pro costs $2/ACU; Teams supports optional pay-as-you-go and pooled usage.
Free Trial Offered?:
Yes

Integrations

No integrations listed.

Screenshots and Video

Pico Macro Keyboard in Flux's 3D board viewer

Pico Macro Keyboard in Flux's 3D board viewer

Company Facts

Company Name:
Flux
Date Founded:
2019
Company Location:
United States
Company Website:
www.flux.ai/p
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Product Details

Deployment
SaaS
Training Options
Documentation Hub
Online Training
Video Library
Support
Web-Based Support

Product Details

Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English

Flux Categories and Features

PCB Design Software

3D Visualization
Autorouting
Collaboration Tools
Component Library
Design Rule Check
Differential Pair Routing
Schematic Editor

Engineering Software

Collaboration
Design Analysis
Design Export
Electrical Engineering

More Flux Categories

Flux Customer Reviews

Write a Review
  • Reviewer Name: A Verified Reviewer
    Position: Founder
    Has used product for: Free Trial
    Uses the product: Yearly
    Org Size (# of Employees): 1 - 25
    Feature Set
    Layout
    Ease Of Use
    Cost
    Customer Service
    Would you Recommend to Others?
    1 2 3 4 5 6 7 8 9 10

    Don't waste your money, deceptive and brings zero value

    Date: May 08 2026
    Summary

    Don't waste your money. Use Kicad, honestly Claude or even Gemini and Copilot were more valuable and free.

    Positive

    They sign you up really easy and lead you to belive they can assist. But then your trial runs out and they don't give you any warning the amount of charges you can incur afterwards

    Negative

    Terrible experience. I was billed sequentially five times while supposedly on a free trial, with zero notification that I would be charged an extra $20. The billing practices feel very shady. On top of that, the AI product itself is subpar—I've honestly gotten better results using Gemini for free. Don't waste your money here; you're better off just using KiCad.

    Read More...
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