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Wattwise · New York

Wattwise in New York

Find out what any appliance costs to run before this month's bill jumps into the next slab. Pick from 98 presets, in your currency, at your tariff, and move the hours slider: the daily, monthly and yearly cost updates as you drag. Then the Savings tools show where the money goes. Free with ads, and one small payment removes them. Support comes from our New Jersey office in ET hours, and onboarding help is included.

Open Wattwise About Wattwise
Android · works offlineWattwise · Calculator
Per month
Rs14,400
Rs480 a day
Rs175,200 a year
12.00 kWh a day at Rs40 a unit
1500W
8h
1
Free
with ads, or one payment to remove them
Live
status
2
Android · Offline

Getting started in New York

We support New York from New Jersey, over a call or on site by arrangement. Across the river from our New Jersey office.

What it does

  • Calculator98 presets in 12 categories or your own wattage, sliders for hours, and a cost card that updates live.
  • My HomeEvery appliance you own, grouped by room, with a cost breakdown chart and a total for the house.
  • SavingsSlab Guard, Meter check, Bill X-ray, AC Saver, Solar payback, the UPS backup timer and a shareable energy card.
  • TariffSingle rate or slabs, taxes and fees, 40 currencies, and a country preset for tariff, voltage and sun hours.
  • ReportA room-by-room PDF, saved wherever you choose: Downloads, Drive or an SD card.
  • SetupLanguage, country, currency and electricity price on first run. Stored on the phone, nowhere else.

Included

  • 98 appliance presets across 12 categories
  • Single-rate or slab tariffs, with taxes and fees
  • Tariff, voltage and sun-hour presets for your country
  • Slab Guard, Meter check and Bill X-ray
  • Solar payback against your own region's sun hours
  • A PDF energy report, saved wherever you choose
  • No account; calculations work offline
  • Free with ads; one payment removes them for life

Price

Wattwise is free. Free with ads, the way most apps are. No account, no subscription, and nothing held back behind the purchase.

DevMarDe product, built and run by our team

Designed, built and supported by DevMarDe. Not resold, not white-labelled, and not handed to anyone else after launch. The people who wrote it take the support calls.

100
Lighthouse performance on this site. Same for SEO, accessibility and best practices
5
products of our own in production
3
practices, each with a named lead
1 day
reply time on every enquiry
4.9
from 9 reviews

Questions people ask

Is Wattwise free?
Yes. It is free with ads, the same way most apps are, and one small payment removes the ads for life. Nothing else sits behind that payment: every preset, every tool, the solar payback and the PDF report are all in the free app.
What does the ad-free purchase cost?
It is priced by region through Google Play, in 173 countries: around $4.99 in higher-income markets, $1.99 in the middle tier and about $1 everywhere else, charged in your local currency. For example $4.99 in the US, £4.49 in the UK, R$9.99 in Brazil, ₹110 in India and Rs 270 in Pakistan. One payment, not a subscription.
When can I download it?
Now. Wattwise is on Google Play for Android, published as dev.wattwise.app, and the button on this page opens the listing.
Can it tell me before my bill jumps a slab?
Yes, that is what Slab Guard is for. Enter your tariff's slabs once and it projects this month's units from your appliances, shows how close you are to the next slab and what crossing it would cost.
Does Wattwise read my meter?
No, you do. Type in one meter reading and Meter check shows the range the meter should be in on any later day. If the real meter is well outside it, something is missing from your list, left on, leaking or the meter is fast.
Do I need an account?
No. There is no sign-up and no login. Your appliance list, tariff and every calculation stay on your phone, and the calculations work without an internet connection. The only thing that uses the internet is the ads.
How accurate is the estimate?
It is arithmetic on the numbers you give it: wattage, hours, duty cycle, standby draw, your tariff and its taxes and fees. The solar figures are annual averages for your country rather than a forecast for your roof.
Which currencies does it support?
Forty, shown with their ISO codes (USD, PKR, INR, EUR and so on). Switch currency and your rates convert with it.
Is there an iPhone version?
Not yet. Wattwise is on Android, published as dev.wattwise.app.