Single-line diagram software in Belgium: 10 tools compared
For a single-line diagram and situation plan under the AREI/RGIE (the Belgian wiring regulations), you can choose in Belgium between free web tools with a limit, one-off purchases per home or per project, and monthly or yearly subscriptions. We compared ten Belgian tools on price, free use, situation plan, AREI/RGIE help, languages and platform. The same tables also include PlanElec Sketch and PlanElec Pro. Those are our own products, and we say so each time.
AuthorStephan BehmFor a single-line diagram and situation plan under the AREI/RGIE (the Belgian wiring regulations), you can choose in Belgium between free web tools with a limit, one-off purchases per home or per project, and monthly or yearly subscriptions. We compared ten Belgian tools on price, free use, situation plan, AREI/RGIE help, languages and platform. The same tables also include PlanElec Sketch and PlanElec Pro. Those are our own products, and we say so each time.
All details reflect what the providers state on their websites on 20 October 2026; we re-checked Voltuno, Eendraadschema app, 1draad, Condui, Amperio and Trikker on 26 October 2026. We did not test the tools ourselves. Marketing claims are in quotation marks. We did not create any accounts and bought nothing. Prices change. The current price is always on the provider’s website, which we link for each tool.
Prices and free use in one table
| Tool | Free use | Paid | VAT |
|---|---|---|---|
| Voltuno | 1 single-line diagram up to 8 circuits and 1 situation plan (1 floor), PDF without watermark | EUR 20 one-off (Lifetime) or EUR 12 per month with team function; each team member needs their own monthly subscription | excl. |
| Eendraadschema app | 1 diagram up to 15 circuits, situation diagram for 1 floor, PDF without watermark | EUR 19.99 one-off (Lifetime); Professional EUR 29.99 per month or EUR 299.90 per year | incl. |
| 1draad | draw, save and import; PDF and print are paid | EUR 25 per project; 5 projects EUR 95; 20 projects EUR 300; EUR 299 per year | excl. |
| PlanElektra | draw; PDF preview with watermark | EUR 17 per PDF export; EUR 39 one-off for unlimited PDF exports (on 20 October 2026, according to the website, not yet for sale) | not stated |
| Condui | unlimited local projects (PDF with watermark) and 1 cloud project | EUR 20 per project; EUR 25 per month for the first 6 months, then EUR 35; EUR 300 per year; team EUR 45 per user per month | not stated |
| Amperio | 1 job site for 7 days, no credit card | Pro EUR 39 per month as launch price (normally EUR 79) or EUR 374.40 per year | excl. |
| Trikker | demo with max. 5 circuits, 1 page of situation plan and watermark | EUR 45 per month or EUR 360 per year, each per PC | excl. |
| Atlas Contrôle | free, no registration; only the diagram of an extension (EV charger or solar panels, optionally battery) | none | – |
| Gen-Schema | free for now, no account | none | – |
| GratisElektrischeSchemas.be | free, no account | none | – |
| PlanElec Sketch (own product) | free, without watermark and without limit; the free PDF carries the line “Drawn with PlanElec Sketch” | none | – |
| PlanElec Pro (own product) | Try Pro: EUR 0, no end date; exports with masked areas from 1 November 2026 | from 1 November 2026: EUR 12 per property (one-off); EUR 24 per month or EUR 240 per year with 3 seats, extra seat EUR 5 per month or EUR 50 per year | none (final price) |
Prices as the provider states them, checked on 20 October 2026, and again on 26 October 2026 for Voltuno, Eendraadschema app, 1draad, Condui, Amperio and Trikker. If you are VAT-registered, you work with the amounts excluding VAT. For private individuals, 21% VAT is added to “excl.”. For “not stated”, the pricing page does not say whether VAT is included. PlanElec charges no VAT (small business exemption scheme); its amounts are final prices.
Features according to the providers’ websites
| Tool | Situation plan | AREI/RGIE help according to the provider | Languages | Platform | Import |
|---|---|---|---|---|---|
| Voltuno | yes | diagrams “following the AREI/RGIE principles” | NL, FR, EN | browser, also offline | Trikker (.trik), paid |
| Eendraadschema app | yes (situation diagram) | compliant symbols and automatic error check | NL, FR | browser (Windows, macOS, Linux, tablet) | floor plan upload; AutoCAD files (DWG/DXF) |
| 1draad | yes | AREI/RGIE-compliant component library | NL, FR, EN | browser, also offline | photo, scan, PDF, Trikker (.trik), free |
| PlanElektra | yes | points of attention and AREI/RGIE guide, no automatic approval | NL | browser | photo or PDF of the floor plan (AI) |
| Condui | yes (situation diagram) | AREI/RGIE validation, also free | NL, FR, DE, EN, PL, RO | browser, installable as a web app | Trikker (.trik), DXF/DWG |
| Amperio | yes | checks from Book 1 | FR, NL, EN | browser (app.amperio.be) | existing diagram (PDF or photo); architect’s plan as situation plan |
| Trikker | yes | “fully compliant with the latest AREI/RGIE requirements” | NL, FR, EN | Windows; macOS in beta | DWG floor plans; Schemalezer (beta): diagram and situation plan from PDF, PNG or JPG |
| Atlas Contrôle | no, to be added separately | symbols and legend according to Book 1 | FR, NL | website | not stated |
| Gen-Schema | yes (from the plans of each floor) | symbols according to table 2.23, no conformity check | FR | browser, offline as a PWA | own projects (JSON) |
| GratisElektrischeSchemas.be | yes (from a 3D model) | automatic AREI/RGIE conformity check | NL | browser | not stated |
| PlanElec Sketch | yes, with floors | symbols according to table 2.23, legend for other symbols; no check of the installation | NL, FR, DE, EN | browser | Trikker |
| PlanElec Pro | yes | AREI/RGIE self-check of the supported rules | NL, FR, DE, EN | browser | floor plan from PDF, scan or image |
“Not stated” means that the provider’s website does not mention it on the check date. That does not prove it is missing. No tool decides the result of the keuring, the inspection by an approved inspection body. That body decides, based on the installation and the documents.
How we compared
We included tools that produce a single-line diagram for Belgian homes and have a Belgian website. For each tool, we read the pricing page, the home page and, where needed, the language versions. We checked amounts on the pricing page and, where the provider also states them elsewhere, compared them with that page. We did not use providers’ comparison pages about other tools as a source, only as a check.
We do not assess the quality of the diagrams or their compliance. The “AREI/RGIE help” column shows what the provider itself promises. Whether a check is complete, you can only find out in the tool itself.
1. Voltuno
According to its website, Voltuno is a web app for single-line diagram and situation plan that also works offline. For free, you make one diagram up to 8 circuits and one situation plan for one floor, with a PDF without watermark. According to the home page, you can start without an account.
Price: Lifetime costs EUR 20 one-off, with unlimited circuits, diagrams and plans, cloud storage, sharing with customers and import of Trikker files. The monthly subscription of EUR 12 adds team collaboration. Each team member needs their own monthly subscription. According to the provider’s machine-readable price summary, all prices exclude VAT.
Suits: anyone who wants a diagram and plan for one or a few homes, with a one-off purchase.
2. Eendraadschema app
According to its website, Eendraadschema app (in French schemaunifilaire.app) works in the browser on Windows, macOS, Linux and tablet. For free, you draw one diagram up to 15 circuits and a situation diagram for one floor, with a PDF without watermark. A first design works without an account. To save plans, you need a free account, according to the FAQ. According to the changelog, you upload a floor plan and import AutoCAD files (DWG/DXF).
Price: Lifetime EUR 19.99 one-off. Professional for electricians costs EUR 29.99 per month or EUR 299.90 per year, with a file per customer, logo and installer details on the PDF, and Peppol invoices. All prices include VAT.
Suits: private individuals with one home, and electricians who want to compare prices including VAT.
3. 1draad
According to its website, 1draad (in French 1filaire.be, in English 1wire.be) lets you draw, save and import for free, including from a photo, scan or PDF of an existing diagram and from Trikker files. You only pay for the PDF or the printout. Besides single-line diagram and situation plan, the website lists external influences, a material list and a home automation diagram.
Price: EUR 25 per project, EUR 95 for 5 projects, EUR 300 for 20 projects, or a yearly subscription of EUR 299 without automatic renewal. All prices exclude VAT. Students get a free account with PDF export. Those diagrams do not count as official plans.
Suits: anyone who pays per delivered project and wants to take over existing diagrams.
4. PlanElektra
According to its website, PlanElektra is a web application in which single-line diagram and situation plan use the same points. An AI assistant reads a photo or PDF of the floor plan and proposes a layout. Distribution board, material list and a 3D view follow automatically. For free, you draw with a PDF preview with watermark. The AI functions need a free account.
Price: EUR 17 per PDF export without watermark, or EUR 39 one-off for unlimited PDF exports, without a subscription. On 20 October 2026, the website said for the one-off purchase that it only becomes available after the payment route has been checked. The website does not say whether the prices include VAT.
Suits: anyone who starts from a floor plan and wants to pay per export.
5. Condui
According to its website, Condui from Studio Oplos VOF works in the browser and can be installed as a web app. You also edit local projects offline. According to the provider, AREI/RGIE validation is also in the free version. For free, you get unlimited local projects, with a PDF with watermark, and one cloud project with the premium functions. According to the provider, the interface comes in six languages; the feature comparison lists import of Trikker projects and of DXF and DWG files.
Price: EUR 20 to upgrade one project. “Everything included” costs EUR 25 per month for the first six months and EUR 35 afterwards, or EUR 300 per year. The team subscription costs EUR 45 per user per month from two users. The pricing page does not say whether the prices include VAT.
Suits: anyone who works in several languages, German included, or needs shared cloud projects as a team.
6. Amperio
According to its website, Amperio is a web app for electricians with single-line diagram, situation plan, job-site tracking and checks from Book 1 during input. You draw, dictate or import an existing diagram. For free, you try one job site for seven days, without a credit card.
Price: Pro costs EUR 39 per month as a launch price instead of EUR 79. According to the provider, this price stays for as long as the subscription runs. Annually, you pay EUR 374.40. All prices exclude VAT. Colleagues join with an invitation code.
Suits: electricians who dictate on the job site and want job-site tracking in the same app. A detailed comparison is in Amperio or PlanElec: which should you choose in 2026?.
7. Trikker
According to its website, Trikker is an installed application for Windows 10 and 11. Since 30 September 2026, a beta for macOS exists, and according to the provider a web version will follow. You import floor plans as DWG. The free demo works without an account, with a maximum of five circuits, one page of situation plan and a watermark on every page. With the Schemalezer (beta), customers with an active licence read in a single-line diagram and a situation plan from PDF, PNG or JPG, including a scan, photo or hand sketch, or describe the installation by typing or dictating; according to Trikker, you have to check the result.
Price: EUR 45 per month or EUR 360 per year, excluding VAT, each for one PC. Students and schools get a free licence with watermark.
Suits: electricians who work on a fixed Windows PC. More details are in Trikker alternative PlanElec: features and prices compared.
8. Atlas Contrôle
According to its website, Atlas Contrôle is an approved inspection body. According to the same website, you create the single-line diagram there of an extension for free and without registration: an EV charger at home, or solar panels with an inverter, optionally with a home battery. Only the extension is drawn. The tool does not make a situation plan. You add that separately. For the PDF, you enter your address and contact details.
Price: free.
Suits: anyone who only has an EV charger or solar panels inspected and does not need a full diagram.
9. Gen-Schema
According to its website, Gen-Schema (gen-schema.kltk.be) is a French-language web tool. You place devices on the plans of each floor, and the tool makes the situation plan and the single-line diagram from them, as PDF or SVG in A4. Everything stays local in the browser and works offline. The provider calls it a demonstration project that may contain errors.
Price: according to the website, free for now, without an account. According to the website, anyone who registers now keeps free access if the tool becomes paid later.
Suits: French speakers who want to draw a simple home themselves.
10. GratisElektrischeSchemas.be
According to its website, GratisElektrischeSchemas.be creates the single-line diagram and situation plan automatically from a 3D model of the home, in which you drag sockets, switches and lights. According to the website, the tool checks automatically for AREI/RGIE conformity, and you export to PDF. You do not need an account.
Price: free, without hidden costs according to the website.
Suits: private individuals who want to start from a 3D model.
PlanElec Sketch and PlanElec Pro (our own products)
PlanElec Sketch is our free web tool for the single-line diagram, without watermark and without a limit on circuits, symbols, pages and drawings. The free PDF carries the line “Drawn with PlanElec Sketch”. The situation plan has floors, and the PDF comes in A4 or A3. You can open Trikker files. Drawing works without an account. With a free PlanElec account, your drawing is stored in the cloud, and the PDF of a saved drawing gets a QR code to check the version.
PlanElec Pro connects floor plan, circuits, distribution board, single-line diagram and situation plan in one project in the browser, with an AI assistant, recognition of floor plans from PDF or scan, and an AREI/RGIE self-check of the supported rules. From the start of the paid plans on 1 November 2026, these apply: Try Pro at EUR 0, single property at EUR 12 per property (one-off), and Pro at EUR 24 per month or EUR 240 per year with three seats. Each extra seat costs EUR 5 per month or EUR 50 per year. All prices are final prices; PlanElec charges no VAT (small business exemption scheme). The price stays for as long as your subscription runs without interruption. Until 31 October 2026, use costs nothing; anyone who registers before 1 November uses Pro free of charge for the whole of November. You can take a Sketch drawing over into Pro, without the situation plan.
The approved inspection body carries out the inspection itself. The PlanElec self-check does not replace it either.
Which tool fits which situation?
| Situation | Tools that fit |
|---|---|
| One home, drawing it yourself, as little cost as possible | free versions of Voltuno (8 circuits), Eendraadschema app (15 circuits), Gen-Schema, GratisElektrischeSchemas.be, PlanElec Sketch |
| One home, paying once | Voltuno EUR 20, Eendraadschema app EUR 19.99, PlanElektra EUR 39 (not yet for sale), 1draad EUR 25 per project, PlanElec EUR 12 per property (from 1 November 2026) |
| Only an EV charger or solar panels | Atlas Contrôle |
| Regular projects as an electrician | subscriptions from 1draad, Condui, Amperio, Trikker, Eendraadschema app and PlanElec Pro (from 1 November 2026) |
| Working in German | Condui, PlanElec Sketch, PlanElec Pro |
| Taking over existing Trikker files | Voltuno, 1draad, Condui, PlanElec Sketch |
| Working on a fixed Windows PC | Trikker |
| Dictating and job-site tracking in one app | Amperio |
Frequently asked questions
Is a free single-line diagram valid for the inspection?
The approved inspection body assesses the installation and whether the diagrams match it. Which software drew the diagram does not decide that. Do watch the limits of the free versions: a watermark, a circuit limit or a PDF that is only available for payment.
Are the prices with or without VAT?
That differs per provider. Voltuno, 1draad, Amperio and Trikker state prices excluding VAT, Eendraadschema app including VAT. PlanElec charges no VAT (small business exemption scheme); its amounts are final prices. PlanElektra and Condui do not state it on their pricing page. For a fair comparison, you convert everything to the same basis.
Which tools also make the situation plan?
Nine of the ten tools also make a situation plan or situation diagram next to the single-line diagram. Atlas Contrôle does not. There you add the plan separately.
Which other tools are there?
Besides the ten tools in this comparison, Belgium also has Schematicals, SUPLAN, As Built Plan, ElectriCAD, Volter, Sparki and Sparkling, among others. They also meet the criteria in “How we compared”; for this version we limited ourselves to ten tools, and the selection says nothing about quality.
Sources and review date
All sources consulted on 20 October 2026; those marked 26 October 2026 on that day.
- Voltuno: prices and home page; llms.txt (26 October 2026)
- Eendraadschema app: prices and French version; home page and changelog (26 October 2026)
- 1draad: prices and French version; home page (26 October 2026)
- PlanElektra: prices and home page
- Condui: prices; feature comparison and Trikker comparison page (26 October 2026)
- Amperio: prices, French prices and home page; llms.txt (26 October 2026)
- Trikker: prices and home page; Schemalezer and description and dictation (26 October 2026)
- Atlas Contrôle: single-line diagram page
- Gen-Schema: home page
- GratisElektrischeSchemas.be: home page
- PlanElec: pricing page
- FPS Economy, AREI/RGIE Book 1
Related articles
- Trikker alternative PlanElec: features and prices compared
- Amperio or PlanElec: which should you choose in 2026?
- PlanElec vs. Excel/paper
- Getting started with PlanElec: from floor plan to first export
- Cost comparison: drawing your single-line diagram yourself vs. hiring an electrician
Try it yourself
Draw your single-line diagram for free in PlanElec Sketch or plan a complete project with floor plan and distribution board in PlanElec Pro. The approved inspection body carries out the inspection.