Keystone E-Calc · Early access waitlist open
Software Built for Dirty Hands and Clean Work.
Field tools for electricians, built by an electrician. Code-cited calculations that run with no signal, show every step of the math, and stay out of your way.
Pre-launch. We'll only email you about early access and launch.
- 01 Basic load 150 m² living area 6,000 W
- 02 Electric range 12 kW nameplate 6,000 W
- Running subtotal 12,000 W
- Works with zero bars Every calculation runs on the device. Basements, crawlspaces and rural sites included.
- Shows the math Every result traces back to its inputs, its steps and the code rule behind it.
- Built from the field Designed by an electrician for gloved hands, bad lighting and real deadlines.
The problem
Your tools should be as dependable as your meter.
Most trade software was built for an office and then ported to a phone. Keystone starts from the jobsite and works back.
The old way
- Desktop-era software squeezed onto a phone
- Apps that stall the moment you lose signal
- Black-box answers you can't defend to an inspector
- Menus three levels deep and buttons too small for gloves
The Keystone way
- Offline-first: the code tables and math live on your device
- Every result cites the rule it came from
- Dark, high-contrast screens with big, glove-friendly targets
- Lean on purpose: it does the job and gets out of your way
Product spotlight · In development
Keystone E-Calc
An offline-first Canadian Electrical Code calculation suite. It starts with residential service load calculations under Section 8, including EV charging with energy management systems, and shows its work on every answer.
Explore E-Calc-
Section 8 + EVEMS
Residential service load calculations that account for EV charging.
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Show the Math
An audit drawer with every step and the code citation behind it.
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Smart "Run" chains
Carry a result straight into the next calculation without retyping it.
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100% offline
An on-device engine with no network calls, no spinner, and no excuses.
Early access waitlist
Get early access to Keystone E-Calc
Join the waitlist and we'll email you when early access opens. We'll never sell your address.