WattLog
EV CHARGE & EFFICIENCY TRACKER

Point.
Snap.
Done.

Aim your camera at the dashboard. WattLog reads every number, logs the charge, and charts your efficiency — no spreadsheets, no manual entry. All your EVs in one private history.

Get it on Google Play See how it works
100% on-device OCR · No account required · Multiple vehicles
WattLog home screen
EFFICIENCY
trending up ↗
VS GAS
a fractionof the cost per mile
Snap
your dash, any EV
Reads
on-device OCR, no typing
Tracks
efficiency, range, cost
Private
your data stays yours
GETS SMARTER EVERY CHARGE

Every capture sharpens the next

The more you log, the better WattLog reads your car's dashboard. Every shared capture helps it learn the next driver's, too. Sharing is anonymous, optional, and off by default.

SINCE CHARGE 48% 159 mi 2.8 mi/kWh 87.4 mi 34,812 mi SINCE CHARGE 48% 159 mi 2.8 mi/kWh 87.4 mi 34,812 mi
1 · THE READ

A photo of your dashboard — any EV, not just one model.

2 · THE EXTRACTION

WattLog lifts every value off the photo.

3 · THE DATA

Clean numbers — and a sharper read next time.

HOW IT WORKS

Three taps from dash to data

No forms to fill. Point at your trip screen and WattLog does the rest — capture, log, and chart every charge.

1

Point & snap

Aim at your trip computer. The OCR reads mileage, battery %, range, efficiency and more — and tells you when every value is captured.

Point your camera at the dashboard
2

Log the charge

Confirm in a tap. WattLog files the session with cost and a clean drive summary — including how much you saved versus a gas car.

Drive summary screen
3

Watch the trends

See efficiency, cost per mile and plug-in habits over time — so you learn what actually moves your range and your bill.

Trends screen
SAVINGS VS GAS

Every mile, measured
against gas.

Add your electricity rate and WattLog compares each session to the gasoline equivalent in your region — so the savings aren't a guess, they're logged.

YOUR EV
pennies / mi
GAS EQUIVALENT
several × more
Cost per 100 milesillustrative
WattLog · your EVlow
Gas equivalenthigh
You save on every charge
WattLog totals it up across the month and year

Private by design

Text recognition runs on your device. Your charge log is yours — no account is required to start tracking, and your driving data isn't sold.

All your EVs, one history

Track multiple vehicles in a single timeline. Switch cars, keep every charge, and compare efficiency across your whole garage.

Trends that teach

Efficiency, cost per mile and plug-in state of charge — charted so you can see what helps your range and what hurts it.

INSIDE THE APP

Built for people who like the numbers

Home
Home & quick stats
OCR capture
OCR capture
Drive summary
Drive summary
Trends
Trends over time
TUNED FOR YOUR EV

Recognition profiles tuned for the Nissan Ariya, Nissan Leaf, Hyundai Ioniq 5, Kia EV6, and VW ID.4 — and the OCR reads any EV's trip computer out of the box. Every shared capture sharpens the next model we tune.

WattLog

Know your EV, charge by charge.

Free on Google Play. Start logging your next charge in seconds.

Get it on Google Play