exactBART! is designed to help you with the BART ticket fare structure and avoid tiny tickets or left over funds on your BART ticket. BART is the Bay Area Rapid Transport rail system in the San Francisco, California bay area.

Features:
- Choose 'from' and 'to' stations. Automatically pre-selects the closest BART station (requires Location Services)
- Get fare directly from BART, or
- Enter fare manually when you don't have network access
- Automatic updates to BART stations
- Access BART phone numbers and web sites

I have a number of BART tickets on my desk. They all have micro funds on them: $0.25, $0.50, $0.10, etc. If you don't plan to use BART a whole lot and plan to leave the San Francisco bay area after a week or so (vacation, business trip, etc) you might end up with small amounts of funds on your BART ticket.

If you purchase your BART ticket with a credit card or debit card you can control exactly how much money you want on your BART ticket. If this amount is exactly the amount of funds for your final trip you will end up with no funds on your ticket; BART will take your empty ticket once you exit the system.

Hence exactBART!