[timwaagh]

you might look into helping people save people money on their work commute. i save something like 232 euro each month by commuting outside of peak rail times (meaning i spend just 99 euro each month on this). but I'm not sure what the costs are for other options (if i bike it would cost more time, if i get a car then there is a number of costs to take into account). an app might analyse all the options and give people a good overview of the pros and cons.