Free one-wire diagram software
In Condui you can draw a one-wire diagram and situation plan for free, in your browser, without installing anything. This page explains exactly what is free, where the limits are and when paying makes sense.
Free in Condui is not a trial of a few days. You can draw, validate and keep a complete diagram without paying.
Local projects live only on your device. They have no cloud sync, online sharing, comments, version history or date marking. PDF export from a local project is limited and carries a watermark. Some professional features, such as advanced import and a logo or signature on the PDF, require a premium project.
For a single home, the free cloud project is usually enough. It includes all premium features, so also a PDF without watermark for the inspector.
| Local project | Free cloud project | Paid project or subscription | |
|---|---|---|---|
| Number | Unlimited | One per account | Per project or unlimited |
| Drawing and AREI checks | Yes | Yes | Yes |
| PDF export | Limited, with watermark | Full | Full |
| Cloud sync and QR sharing | No | Yes | Yes |
| Version history | No | Yes | Yes |
| Templates | No | No | With subscription |
Only when you need more than one project with premium features. For an occasional extra project you unlock a single project once. If you draw diagrams regularly, as an electrician or installer, a subscription gives unlimited cloud projects and templates. Amounts are on the pricing page.
A project you unlock once stays unlocked. If you stop a subscription, your cloud projects stay available read-only, so you can still view and download them.
You can also draw a one-wire diagram in a general free drawing program such as draw.io, or in free CAD software. That costs nothing, but you have to find the AREI symbols, keep the numbering yourself and draw the situation plan separately. Nothing is checked.
Condui is built for Belgian one-wire diagrams. The one-wire diagram and situation plan stay linked and you get feedback while you draw. See the guide how to draw a one-wire diagram.
No. You can download every project, local or cloud, as a full editable file. Do this for local projects in particular: they live only in your browser or device storage and disappear if that storage is cleared.
Installed as a web app, Condui also works offline. Open it online at least once; after that you can edit local projects without internet.