About this app
What Chargebook does
Chargebook is the simple, private logbook every EV owner actually needs. Record each charging session — kWh added, total cost, start and end battery percent, miles or km gained, and whether you charged at home or at a public station. Chargebook instantly calculates your cost per kWh, cost per mile, and rolling monthly spend so you always know the real price of driving electric. Supports multiple vehicles, unit switching between miles and kilometres, and exports a clean CSV if you ever need the numbers elsewhere. Everything runs entirely offline with SwiftData — no account, no subscription, no cloud sync required. • Log sessions in under 20 seconds: kWh, cost, location, start/end percent • Cost-per-kWh and cost-per-mile computed instantly • Monthly and yearly spend totals per vehicle • Home vs. public charging breakdown • Multi-vehicle support with battery capacity profiles • Miles or kilometres, your choice • CSV export for tax records or reimbursement • Fully offline, no account ever
Features
Built to be useful, not noisy.
Session logger
Add a charging session in under 20 seconds: date, kWh added, total cost, start and end battery percent, location type (home/public), and optional notes.
Cost insights
Automatically computes cost per kWh, cost per mile or km, and session efficiency from entered data, displayed per session and rolled up monthly.
Vehicle profiles
Store each vehicle's name, battery capacity (kWh), and efficiency rating so all calculations are accurate and you can switch between cars.
Monthly dashboard
Rolling month view showing total spend, total kWh, sessions count, and a home-vs-public split — the single screen that answers 'what did charging cost me this month?'
Why it exists
The problem
EV owners have no easy way to know their true cost per mile from charging — they rely on rough mental math, scattered receipts, or spreadsheets, and popular apps either require a cloud account, focus on route planning rather than cost logging, or mix too many features to be usable as a daily logbook.
What's different
How Chargebook stands out
A focused, fully offline charging logbook that pairs per-session logging with instant cost-per-kWh and cost-per-mile calculations and a clean monthly spend view — unlike navigation and charging-network apps it does one thing deeply, with SwiftData privacy and no account required.
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FAQ
Questions about Chargebook
How much does Chargebook cost?▾
Chargebook is free. All features are included from day one — no subscription, no in-app purchases, no paid tiers. Everything you see in this listing works the moment you install it.
Where does Chargebook store my data?▾
On your device. Chargebook is built privacy-first: no account is required, no analytics SDKs, no third-party trackers. Nothing is uploaded to a server we control — the app works without one.
What platforms does Chargebook support?▾
iOS, on iPhone and iPad. You can find the latest availability on this page.
How do I get support for Chargebook?▾
Use the Support link on this page, or email support@allthingsn.com. We answer every message and keep responses on the same thread.
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