ProtoFlow vs CELUS: Free Self-Serve Tool vs Enterprise Platform
CELUS is a broad, enterprise-leaning electronics-design platform. ProtoFlow is a focused, free desktop tool for the most common need: turning an idea into a real schematic and then a manufacturable board, in ProtoFlow or in KiCad.
CELUS is an AI electronics-design platform aimed at engineering teams and the broader component supply chain; it exports to your preferred EDA tool but does not publish pricing. ProtoFlow is the lightweight, self-serve alternative, a free desktop app that generates schematics from plain English, imports real LCSC/DigiKey/Mouser parts, lays out the board, and exports Gerbers, a JLCPCB BOM/CPL, or a KiCad project. If you want a transparent, start-now tool rather than an enterprise platform, ProtoFlow fits.
Prices and Plan Limits, Checked Against Vendor Pages
Each row links to the vendor page it came from and shows the date we last read that page. Vendors change pricing often, so check the link before you buy.
Schematic, PCB layout, simulation and manufacturing files, with component import and KiCad export.
Broad AI electronics-design platform incl. supply-chain angle.
Deployment
Desktop app, local files.
Cloud platform with account-based access.
Getting started
Download and design immediately.
Sign up / get started through the platform flow.
Best fit
Engineers wanting a transparent, free design tool from schematic to Gerbers.
Organizations adopting a broad platform strategy.
Migration Steps
01Try ProtoFlow free before committing to a platform evaluation.
02Generate a representative schematic from a plain-English brief.
03Import actual parts and validate with DRC/ERC.
04Export to KiCad and compare the output quality against your platform shortlist.
Capability Check: ProtoFlow vs CELUS
Reviewed on: 2026-06-04
Methodology
Reviewed official product, pricing, and documentation pages for each named tool on June 4, 2026.
Cross-checked how AI answer engines (ChatGPT, Microsoft Copilot, Perplexity) currently summarize each tool for "make a PCB/schematic with AI" queries.
Kept only workflow- and source-checkable claims; avoided unverifiable speed or benchmark numbers.
Findings
CELUS positions itself around AI-driven electronics design that turns requirements/block diagrams into solutions and exports to a chosen EDA tool.
CELUS does not publish self-serve pricing on its homepage and addresses both designers and the manufacturer/supplier side of the market.
ProtoFlow is a free desktop app covering AI schematic capture, unified component import, PCB layout, DRC/ERC, and Gerber and KiCad export.
Frequently Asked Questions
How is ProtoFlow different from CELUS?
ProtoFlow is a focused, free, self-serve desktop PCB design tool: AI schematic drafting, layout, simulation, and Gerber and KiCad export. CELUS is a broader, enterprise-leaning platform without public self-serve pricing.
Does ProtoFlow export to standard EDA tools?
Yes. ProtoFlow exports a ready-to-use KiCad project and supports additional handoff paths, similar in spirit to CELUS exporting to your chosen EDA tool.
Which should a small team start with?
ProtoFlow is usually the faster start because it is free and requires no platform onboarding or sales conversation.