App for households
AngoWatt
AngoWatt connects a smart meter to the customer's home and answers two questions the monthly bill does not: how much have I spent this month, and how long will the credit I bought last. The app is available in Portuguese, English and French.
The app
The screens the customer uses
The images below reproduce the app as it runs, with the text and layout that are in production. The values come from a demo account.
7 750 Kz left before reaching your goal
Adjust my goalsHome Monthly target, prepaid balance estimated from the last declared top-up, and savings so far.
Usage History by day, week, month or year, in kWh or in kwanzas. The fixed standing charge is shown separately from actual consumption.
Record your ENDE electricity purchases
3 September10 000 Kz
12 August7 500 Kz
28 July10 000 Kz
Low credit: estimated balance 4 300 Kz (threshold 5 000 Kz)
Top-up The customer declares ENDE purchases made at Multicaixa. The app estimates the remaining balance and warns before it runs out.
Situation
With a prepaid meter, the power stops without warning
Anyone buying credit at a Multicaixa terminal has no way of knowing how much is left before the meter cuts off. The sum is done in their head, from the last top-up and a sense of how long it usually lasts. When it runs out, it runs out in the evening or during the night.
AngoWatt solves this with a simple, continuous subtraction. The customer declares the purchase they made, the app measures real consumption minute by minute and shows the estimated balance and how many days are left at the current rate. When the value drops below the chosen limit, an alert arrives.
What the app does
- Consumption for the day, week, month and year, in kWh or in kwanzas
- A daily, monthly or yearly target, with savings tracked against it
- Prepaid balance estimated from declared ENDE purchases
- Low credit alert and power cut alert
- Breakdown of consumption across the installed sensors
- Temperature tracking where a probe is fitted
- History export in CSV
- Phone notifications as well as e-mail
How it works
From the meter to the phone
Measurement in the home
A smart meter in the panel measures power and energy. A current clamp can be added per circuit, to separate the appliances that weigh most.
Wireless transmission
The data travels by radio to the neighbourhood gateway. No Wi-Fi in the home and no SIM card in the meter.
Ingest and history
Our servers receive the frames and store the series. The history stays available to consult and export.
The customer app
Each account sees only its own meters. Access is through the phone browser, with no mandatory install.
Who it is for
Who it was built for
Homes
A family on a prepaid meter that wants to know what it spends and when it will need to top up.
Condominiums and estates
One gateway covers the whole site and each unit has its own private account. The management sees the total and the breakdown.
Operators
There is an admin area for managing customers, groups and tariffs, with a history of tariff changes.
See the app with your own data
We install a meter in a test home and open an account. After two weeks there is enough history to see what the app shows in your case.