For everyone who wants to track their vehicle's fuel economy, fuelyo is a online tracker that provides fuel efficiency data based on your actual gas mileage information. Unlike manual tracking fuelyo is simple to use and can be updated via SMS.
+ Enter mileage info via SMS + See fuel efficency over time - Multiple cars per user
Sinatra app for website / web service that accepts mileage info Hosted on Heroku Zeep Mobile for SMS support 1. User sends SMS message to Sinatra App 2. SMS message consists of three parts <app_id> <odometer> <gallons> <total_price> 3. Sinatra app parses SMS message and saves data to database 4. User logs into web app 5. User views mileage history