Official
Dart Charge (official app)
Built by the Dart Charge team. Linked to the same backend as gov.uk, so you can pay one-off crossings or manage a pre-pay account from a phone.
What it does
- Pay any crossing in two taps
- Reminder if you cross without paying
- Open and manage a pre-pay account
- View crossing history per vehicle
- Add multiple vehicles by registration
Where to get it
Search "Dart Charge" on the App Store (iOS) or Google Play (Android). The publisher is National Highways. Avoid clones with similar names.