WattKit: EV Cost Calculator
EV Costs, Range & Comparison
Price history
About
Calculate electric vehicle running costs, compare models, and track battery health. Get clear, honest numbers for your commute, charging, and long-term ownership. Features include detailed comparisons, PDF reports, and winter range estimates.
What's New in WattKit
1.5
March 1, 2026
NEW: EV DATABASE Browse 50+ makes, 200+ models, and 600+ variants — every relevant spec filled in automatically. Just pick your vehicle and go. NEW: FULL CHARGE RANGE See your rated range, current range adjusted for battery health, and estimated winter range across Mild, Typical, and Severe conditions. ALSO NEW Charging rates updated to Off-peak, Standard, and Public Manual entry still available for vehicles not yet in the database Performance and stability improvements
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FAQ
Does WattKit have ads?
No, WattKit is completely ad-free. The app is free to download and use, with all features unlocked from day one.
How much does WattKit cost?
WattKit is free to download and use. There are no in-app purchases or subscriptions, meaning you pay once and own it forever.
What electric vehicles can I find in WattKit?
WattKit features a database of over 50 makes, 200 models, and 600 variants. If your vehicle isn't listed, you can add it manually with built-in guides.
Can WattKit estimate my EV's range in winter?
Yes, WattKit provides estimated winter range adjusted for battery health and three levels of cold weather severity (Mild, Typical, Severe) using research-backed efficiency loss data.
How does WattKit track battery health?
WattKit tracks your battery's estimated health over time based on its chemistry type (NMC, NCA, LFP, LMFP), helping you understand how age and usage affect usable capacity.
Can I share my EV comparisons with others using WattKit?
Yes, WattKit allows you to export detailed, professionally formatted PDF reports of your EV comparisons. These can be shared via AirDrop, email, WhatsApp, or any other app on your phone.
Does WattKit work offline?
WattKit works offline after the initial setup. An internet connection is only required to load the vehicle database on first use; all subsequent calculations and features operate without an internet connection.
What devices is WattKit available on?
WattKit is available on Apple Watch and iPhone. It also supports home screen widgets in three sizes for quick access to journey costs.
