Effi
Know exactly what your EV costs to drive.
Effi turns the charges and drives you log into the one number that matters: what a mile really costs you. It prices each drive from the energy still in the battery, oldest charge first, so one expensive fast charge never makes last week's cheap miles look dear. Every figure is yours, and nothing leaves your iPhone.
Built around four ideas.
Real cost per mile
Every drive is priced from the energy actually in your battery, oldest charge first — not the last rate you happened to pay.
Record as you drive
The phone follows the road and shows distance, speed and altitude on your Lock Screen while you go.
Weekly and monthly recaps
A short notification at the end of each week and month, built only from what you logged.
Stays on your iPhone
No account, no sign-up, nothing uploaded — the whole history lives on the device.
Meet Effi.
Coming soon to the App Store. No account, no sign-up — your charges, drives and costs stay on your iPhone.
