From van to job site to invoice, today’s electricians run much of their business from their phone. Whether it’s completing digital certificates on-site or sending invoices before you’ve even left the property, the best apps for electricians in the UK can make every job faster and easier.
If you’re a sole trader looking to go paperless, or you’re managing a growing electrical contracting business, this guide is for you. It rounds up the top digital tools. From cable calculators and certification apps to invoicing and job management systems, to help you find what fits best for the way you work.
Everyday Apps Electricians Rely On
Cable Calculations Apps
CableCalc 18-2
The go-to cable sizing app for UK electricians working to BS 7671. CableCalc handles volt drop, cable selection, and earthing calculations with current wiring regulations already built in. It’s ideal for quick on-site decisions when you need accurate results without digging through reference books. Perfect for both domestic and commercial electricians who want regulation-compliant answers fast.
Key Features:
- BS 7671 compliant calculations
- Volt drop and cable sizing
- Earthing and bonding calculations
- Installation methods and correction factors
- Save and share calculations
Cable Selection
A lightweight app designed specifically for quick cable-sizing checks. It lets you determine the correct cross-sectional area based on factors like load, cable length, conductor material and installation method. It’s aimed at household and domestic circuits, making it a handy option when you just need a fast, no-frills calculation on site. If you want something straightforward for everyday domestic calculations without the bulk of a full design app, CableSelection does the job well.
Key Features:
- Cable and wire sizing based on load, length, material and number of cores
- Includes voltage-drop considerations
- Simple, minimal interface for quick checks
- Small download size and no unnecessary extras
Volt Drop Calc
A straightforward tool focused purely on volt-drop checks. Less comprehensive than CableCalc, but faster if you just need a quick calculation between jobs. Works well as a backup for electricians who want a simple, dedicated volt-drop calculator without extra menus.
Key Features:
- Quick volt drop calculations
- Multiple cable types supported
- Simple, fast interface
- Imperial and metric units
Megger Cable Calculator
Focuses on cable selection and sizing with Megger's typical attention to technical accuracy. It's particularly trusted by electricians already using Megger testing equipment who want consistency across their tools. The interface is clean and professionally focused.
Key Features:
- Cable selection guidance
- Current carrying capacity
- Voltage drop calculations
- BS 7671 reference data
- Save project calculations
Ugly’s Electrical References
The digital version of the classic pocket reference guide that’s lived in toolboxes for decades. Although US-focused, many UK electricians find the general electrical principles, formulas, and motor data invaluable, particularly on commercial and industrial jobs.
Key Features:
- Comprehensive reference tables
- Wiring diagrams and formulas
- Motor and transformer data
- Quick lookup for common calculations
- Offline access to all content
Electrical Calculations Lite
A versatile calculation tool covering multiple electrical formulas and conversions. Good for electricians who need to handle power calculations, motor sizing and lighting loads.
Key Features:
- Multiple electrical calculations (power, current, resistance)
- Lighting calculations
- Motor and transformer sizing
- Unit conversions
- Formula reference library
Certificate Tools
iCertifi
The leading digital certification app for UK electricians. Complete BS 7671 installation certificates directly on your phone or tablet and submit them straight to competent-person schemes, no handwriting or office returns required.
Key Features:
- BS 7671 compliant certificates (EIC, MEIWC, EICR, MWC)
- Submit directly to competent person schemes
- Auto-populate customer and job details
- Photo capture and attachment
- Cloud storage and retrieval
- Signature capture on-site
EasyCert Mobile
Another strong certification option built for UK electrical contractors. EasyCert streamlines every step with templates, pre-filled data, and integration to back-office systems, great for businesses with multiple engineers who need consistency across certificates.
Key Features:
- Complete range of electrical certificates
- Customizable certificate templates
- Integration with office systems
- Schedule and test record management
- PDF generation and email delivery
Testing/Simulations Apps
iCircuit
A circuit design and simulation tool for building and testing circuits virtually before wiring them. Useful for training, troubleshooting, or planning installations,, particularly for electricians involved in design work or training apprentices.
Key Features:
- Real-time circuit simulation
- Component library with common electrical parts
- Oscilloscope and multimeter tools
- Voltage and current visualisation
- Export circuit diagrams
Apps That Help Run the Business Side
Invoicing apps
QuickBooks
A leading accounting and invoicing platform for UK small businesses, including electrical contractors. Beyond professional invoices, it handles expenses, VAT, and reporting, giving you a full view of finances without spreadsheets. Perfect for electricians who want proper financial visibility and easy integration with accountants.
Key Features:
- Create and send professional invoices
- Track expenses and capture receipts
- Prepare VAT returns and financial reports
- Connect to bank accounts and accountants
Invoice2Go
A simpler, faster invoicing app for electricians who don’t need full accounting software. Generate invoices on-site, accept payments, and track what’s outstanding, ideal for sole traders or small teams.
Key Features:
- Quick invoice creation from templates
- Payment acceptance (card, bank transfer)
- Invoice tracking and payment reminders
- Expense logging
- Basic reporting
- Mobile and web access
Time & mileage trackers
Timekeeper
A simple, no-fuss time tracking app for logging hours worked on each job. Perfect for electricians who bill hourly or want to track labour for job costing. Start and stop timers throughout the day, then export data for payroll or invoicing.
Key Features:
- Simple start/stop timers
- Job and project time allocation
- Timesheet exports
- Historical time tracking
- Reports by job or date range
MileIQ
Automatically tracks every journey and sorts trips for HMRC mileage claims. Just keep your phone in the van - MileIQ logs everything and lets you swipe to mark business or personal trips. A must-have for electricians covering multiple sites daily who want accurate mileage without paperwork.
Key Features:
- Automatic drive detection and tracking
- Swipe to classify trips
- HMRC-compliant mileage reports
- Weekly mileage summaries
- Integration with accounting software
Payment tools
SumUp
A mobile card payment solution that lets you accept card and contactless payments on-site using a small card reader and your smartphone. No monthly fees, you just pay per transaction. Perfect for electricians who want to offer payment flexibility to customers and get paid immediately rather than waiting for bank transfers or chasing invoices.
Key Features:
- Accept chip & PIN, contactless, and mobile wallet payments
- No monthly fees, just transaction charges
- Instant payment confirmation
- Payment history and reporting
- Integration with invoicing apps
Security/Inventory
ARMD
A tool tracking and inventory app built for tradespeople. Register tools with serial numbers and photos, report thefts, and track van stock or materials. Essential for electricians managing valuable equipment or multiple vans.
Key Features:
- Tool registration with serial numbers
- Theft reporting and alerts
- Inventory tracking for materials
- Van stock management
- Purchase history and receipts
Job Management Software for Electricians
The apps above solve specific problems. But juggling multiple disconnected tools creates inefficiency - entering customer details in one place, job information in another, and manually transferring data to invoicing.
Job management software covers the complete job lifecycle from a single platform: quoting, scheduling, field updates, invoicing, and payment collection. Instead of stitching together five different apps, you manage everything in one system that's specifically designed for how trade businesses operate.
Your team in the field stays connected to the office, customers get automatic updates, and your financial data flows directly into your accounting systems without manual entry.
Most importantly, job management software gives you back time. Not just for administrative staff, but for your electricians who can focus on:
- Improving first-time fix rates
- Fitting more jobs into a day
- Eliminating hours of admin and paperwork
- Providing better customer service
8 Benefits of Job Management Software for Electricians
1. Save time through efficiency
Job management tools are designed to give your team time back. They do this by managing and automating processes across your entire business. You spend less time writing out job sheets and more time completing them. Route optimisation means less driving between jobs. Automated invoicing means less time chasing payments.
2. Boost customer satisfaction & self-service
Customers can book jobs online, track ETAs, and receive digital certificates instantly, no endless calls or chasing updates. It’s transparency that builds trust.
3. Real-time updates & mobile app
Engineers can update job status, capture photos, and collect signatures right in the app. It keeps admin minimal and every job moving quickly.
4. No more double keying (integrations)
No need to enter the same information twice. Choose a platform that connects to your finance, CRM, and scheduling tools so everything updates automatically.
5. Secure, centralised customer data
Customer data needs to be secure and accessible. Spreadsheets aren't adequate for this. A job management tool with an integrated CRM in the cloud means your team can find customer information, vital documents, and safety certificates in seconds. Cloud-based systems are also more secure - data encryption and firewalls prevent data leaks and ensure compliance.
6. Reporting & insights (SLAs, KPIs)
When your platform can generate reports on SLAs and KPIs, you can spot issues and blind spots before they become serious problems. Which engineers have the best first-time fix rates? Which types of jobs are most profitable? Where are you losing time? This visibility drives better business decisions.
7. Easy scaling for growing contractors
When demand grows, you can schedule more jobs per day, handle emergency callouts smoothly, and invoice faster, all without adding admin load.
8. Compliance & certificate storage
Store and retrieve every certificate instantly. When an inspector or customer asks for documentation, it’s right there, no searching through old folders.
BigChange: The All-in-One App for Electrical Contractors in the UK
BigChange is job management software for electricians that covers every stage of the job lifecycle from quote to invoice.
For Engineers
No more fussing with paperwork, endless calls to the office, or missing documents. The BigChange mobile app gives engineers everything they need in one place. Capture signatures and photos on-site, access customer history and previous job notes, complete digital forms, and update job status in real-time. Engineers can focus on the electrical work instead of administrative tasks.
For Back Office Teams
Get complete visibility and manage everything from a single platform. BigChange integrations connect with CRM and sales systems, accounting packages, Microsoft add-ins, and web-based phone systems. Schedule jobs efficiently with route optimisation, communicate instantly with field teams, and monitor job progress in real-time.
For Business Owners
Extract insights into areas for improvement, bring together data from different sources to create custom reports, and make decisions based on actual performance data rather than gut feeling. This is the visibility you need to scale and grow profitably.
Get to know BigChange in 2 minutes
Choose the Right App for Your Electrical Business
Utility apps like cable calculators, certificate tools, and invoicing platforms save time day-to-day. They solve specific problems efficiently, and every electrician should have the essentials on their phone.
But if you're serious about growing your electrical business, you need an all-in-one job management platform that connects your entire operation, from the first customer inquiry to the final payment.
That's where systems like BigChange improve how electrical contractors operate. Instead of juggling multiple tools and manually transferring information, everything flows through one integrated platform. Your team saves hours every week. Your customers get better service. Your business gets the visibility needed to scale.
Want to see how BigChange could work for your electrical business?
Speak to an expert today about your job management needs and discover how BigChange can remove inefficiencies holding you back.
