Comparison

Electric Master vs Volter Electrical Diagrams

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Electric Master

This app provides a suite of electrical calculation tools for professionals, offering NEC-compliant solutions for wire sizing, voltage drop, and more. It works offline and allows for PDF export of results with custom branding.

Highlights
  • NEC-compliant electrical calculators
  • Offline functionality
  • Voltage drop calculations
  • Ampacity and wire sizing
  • PDF export with branding
  • Calculation history
  • Siri Shortcuts integration
Features
Read full description

Every answer names the code table it came from — 310.16, Chapter 9, 250.122, Article 220 — so you can check it, cite it to an inspector, and learn it. That is the whole point. 20 calculators and a full panel planner. All of it works with no signal, in a basement, on a roof, in a crawlspace. PANEL PLANNER + PANEL SCHEDULE Lay out the actual board on screen. Drag breakers, GFCI/AFCI devices, busbars and terminals onto the rail, wire them up, name every circuit. Then export a PDF with your logo: panel schedule, board drawing and a parts list, ready to hand over. NO ACCOUNT, NO ADS - VOLTAGE DROP — branch and feeder circuits, instant 3%/5% check - AMPACITY — NEC Table 310.16 lookup, every size and insulation type - GROUND WIRE — equipment grounding conductor per 250.122 - OHM'S LAW and POWER TRIANGLE - THREE PHASE - PANEL PLANNER — free to enter and draw, core devices included MORE CALCULATORS - WIRE SIZING — the right conductor for the circuit, accounting for ampacity and temperature - CONDUIT FILL — EMT, IMC, RMC, PVC and flexible raceway - CONDUIT BENDING — 9 bend types (90°, offset, 3- and 4-point saddle, rolling offset, concentric, back-to-back, parallel offsets, matching centers), bender presets and an on-screen level - BOX FILL — junction box sizing per 314.16 - DWELLING LOAD — service sizing per Article 220 - NON-DWELLING DEMAND — commercial load calculation - SERVICE ENTRANCE — service and feeder sizing - GROUNDING ELECTRODE — per 250.66 - DERATING — temperature and conduit-fill factors - MOTOR — branch circuit protection per Article 430 - TRANSFORMER — overcurrent protection per Article 450 - FAULT CURRENT — available short-circuit current - EV CHARGER — EVSE branch circuit and load - SELECTIVITY — protective device coordination FOUR CODES, ONE APP NEC 2023 and 2026 - CEC 2024 (CSA C22.1) - BS 7671 - DIN VDE 0100. The app picks the right one for your region, and you can switch any time. Nobody else carries all four. PAY ONCE IF YOU WANT TO Every calculator gives you one free visit first, so you can check the math against your own book before you decide. Then choose a one-time Lifetime purchase and never see a subscription again — or pay yearly or monthly if you prefer. BUILT FOR THE TRUCK, NOT THE OFFICE - 100% offline. No internet, no account, no sign-up. - No ads. No tracking. No data collected. - PDF reports with your company logo and license number, US Letter or A4 - History with job names, side-by-side comparison, Siri Shortcuts, Home Screen widget Not affiliated with, endorsed by, or sponsored by the NFPA, CSA Group or the IET. NEC and National Electrical Code are registered trademarks of the National Fire Protection Association, Inc. Always verify against the adopted code edition in your jurisdiction. Terms: https://laborsam.com/apps/electric-master/terms Privacy: https://laborsam.com/apps/electric-master/privacy

About

Volter Electrical Diagrams

Features
Read full description

Volter is a drawing program for electrical diagrams according to the AREI, the Belgian electrical code, made for installers working in Belgium. You draw the floor plan with walls, doors and windows, place sockets, light points and switches, and spread them over your circuits. The single-line diagram follows by itself from what is on the plan. Change something on the plan and the diagram changes with it. Prefer to start from the single-line diagram? Then you place the components on the plan afterwards. WHAT VOLTER DOES - Floor plan with walls, doors, windows and rooms that recognise themselves - Single-line diagram derived directly from the placed components - AREI checks while you draw: circuits, residual current protection, smoke detectors and more - 67 electrical symbols, from switches to inverters and charging stations - Several floors and several distribution boards in one project - A DXF file or an image as background under your floor plan - Export to PDF, DXF, SVG, PNG and JPEG through the share sheet - Dutch, French, English and German - Light and dark theme FOR WHOM For electricians, installation companies and engineering firms that must deliver diagrams that pass inspection. Volter follows the terms of the AREI and the habits of the inspector, not those of a general drawing program. YOUR PROJECTS Projects belong to your Volter account and are ready on every device where you are signed in: iPad, Mac, Windows and the browser. Lose your connection for a while and you simply keep working; the app syncs as soon as you are back online. ACCOUNT You sign in with your Volter account, using Apple, Google or email. Without an account you can explore the demo. Volter is made by Asenko in Belgium.

Screenshots

Electric Master4 screens
Volter Electrical Diagrams4 screens

Verdict

The call

The clearest difference is in-app purchases: Volter Electrical Diagrams at none against Electric Master's 3. Volter Electrical Diagrams also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Electric Master sells 3 in-app purchases, starting at $9.99 per month. Volter Electrical Diagrams asks for nothing beyond the download.

UpkeepUpdate frequency

Electric Master ships an update every 2 weeks, Volter Electrical Diagrams every 2 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Electric Master versus Volter Electrical Diagrams: the parameters behind the verdict, then further details
ParameterElectric MasterVolter Electrical Diagrams
PriceFreeFree
Rating3.6 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size72 MB8 MB
Age rating4+4+
DeveloperYusuf Can SamilogluAsenko

In-app purchases

3 purchases

Electric Master

Subscriptions2
  • Pro Monthly — All Calculators$9.991 Month
  • Pro Yearly — All Calculators$59.991 Year
One-time1
  • Pro Lifetime — All Calculators$119.99
None

Volter Electrical Diagrams

No in-app purchases

Questions

Is Electric Master free?
Electric Master is free to download, with in-app purchases available.
Is Volter Electrical Diagrams free?
Volter Electrical Diagrams is free to download, with no in-app purchases.
Do Electric Master or Volter Electrical Diagrams have ads?
Neither Electric Master nor Volter Electrical Diagrams shows ads.
Which is updated more often, Electric Master or Volter Electrical Diagrams?
Electric Master ships an update every 2 weeks, and Volter Electrical Diagrams every 2 days. Most recently, Electric Master was updated on October 24, 2026 and Volter Electrical Diagrams on October 31, 2026.

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