The Emporia App
Free, and it stays free
No subscription, no in-app purchases, no paywalled features. You buy the hardware once and the app is included for the life of the device. iOS, Android, and a web app for the desktop.
Live, to the second
Open the app and you see what your supply is drawing right now, updating every second — total, per phase, and per monitored circuit. Switch on a geyser and watch the number move before you have put the phone down.
That immediacy is what makes the data usable. A monthly figure tells you that you spent money. A one-second figure tells you what spent it.
History, and how long it is kept
| Resolution | Retained for |
|---|---|
| 1 second | About 3 hours (CSV export only) |
| 1 minute | 7 days |
| 15 minutes | 1 year |
| 1 hour and above | Long term |
If you need the fine detail, export it. Second-level data is short-lived by design — investigating a machine's start-up profile or a suspected fault, export the CSV while the data still exists.
Name every circuit
“Compressor 2” is useful; “Circuit 7” is not. Naming takes ten minutes at commissioning and determines whether anyone looks at the app again. Circuits can be typed (AC, water heater, EV and so on), merged, and given multipliers where one sensor stands for a multi-pole circuit.
Alerts
Set thresholds on the loads that matter. A limit on a motor catches a bearing going before it seizes. A limit on total load catches the thing nobody switched off. Alerts can be set on amperage, kWh, or running time — useful for a pump that should never run more than an hour.
More than one monitor, one account
Several boards or several sites appear together under one login, which is how multi-location businesses use it. The same account works on any number of phones — the facility manager and the owner can both watch.
What does not apply in India
Some app features are built for American utility programmes — utility rate-plan integration, demand-response enrolment, and dollar-denominated tariffs. They are harmless but not relevant here; cost figures are best read as consumption (kWh) rather than the app's currency estimates.