VoltLog: EV Charging Cost Log

Know what charging your EV really costs.

VoltLog is a private, offline EV charging logbook for recording home and public charging costs. Log each charge, track electricity use and calculate your real charging cost per mile or kilometre from odometer readings.

Unlike a basic EV cost calculator, VoltLog builds a record from your actual charging sessions and distance travelled.

PRICE OFF-PEAK CHARGING CORRECTLY
Use time-of-use home electricity tariffs with different peak and off-peak rates. Record when you charged and VoltLog prices the session from your configured tariff windows — an overnight charge gets your overnight rate, an evening charge gets your standard rate. Ideal for overnight EV tariffs and other variable-rate home charging plans.

SEE YOUR TRUE COST PER MILE
Add odometer readings alongside your charging history. VoltLog uses your recorded charging costs and distance travelled to show what your EV actually costs to drive.

View:
• Charging spend and energy added in kWh
• Cost per mile or kilometre
• Efficiency in miles per kWh, as a trend over time
• Home versus public charging split
• Charging networks ranked by price per kWh
• Charging history and spend over time

SEPARATE HOME AND PUBLIC CHARGING
See how much energy and money goes into charging at home compared with public charging stations. Record the rate or total paid for each session without depending on a specific charging network.

REPORT BUSINESS CHARGING
Create a date-based PDF report of business charging records for expenses, reimbursement or your own accounts. Need the underlying data? Export your full charging history to CSV for spreadsheets and further analysis.

OPTIONAL PARKING REMINDER
VoltLog can use your car's Bluetooth connection to remind you to record a charge after you park. This is optional and does not connect to the vehicle's systems or retrieve car data.

PRIVATE AND OFFLINE
• No account and no cloud required
• No connection to your car and no charger account linking
• Multiple vehicles, each with its own battery size and currency
• Saved locations so repeat charges are one tap
• Charging records stay on your device

Figures produced by VoltLog are estimates based on the records you enter, not tax or accounting advice. Confirm any reimbursement figure with your employer or accountant.

Log your charging. Understand your tariff. Know your true cost per mile.

Contact: support@clearstackapps.com

Recent changes:
Maintenance update: under the hood fixes and improvements.