One payment · Lifetime updates · No subscription
The UK electrician's toolbox — now in your pocket.
Every SparkyHub calculator, native on iPhone. Works offline on site, saves your jobs, and launches instantly from your home screen. One payment, yours for life — no subscription.
Works offline on site
Every calculator runs with no signal — basements, plant rooms, new builds. The full toolbox in your pocket, wherever you're working.
Saves your jobs
Results and projects are stored on your phone, so you can pick up exactly where you left off on the next visit.
Instant from your home screen
Launch straight from the home screen — no browser, no loading, no faff. The fastest way to the tool you need.
Pay once. Yours for life.
No subscription, no renewals — one payment. £14.99 is an introductory price that rises to £29.99 as we add tools, and every update is included free, forever. Today is the cheapest it will ever be.
Introductory £14.99 · one payment, yours for life
Prefer the web? Every calculator is free online at sparkyhub.co.uk/calculators. The app adds offline access, saved jobs and home-screen speed.