Based on simple math, this app aims to help you add value to your Metrocard in a way that won't leave any leftover change after paying for your trips.
As of the time of this publication, the cost for a subway fare is $2.75, and when adding value to your card greater than or equal to $5.50, a 5% bonus is added, which is nice but can lead to uneven balances. Use this app to figure out EXACTLY how much to add to your card.
Idea based on the work done by Ben Wellington here:
MTA fare data:
Project source here:
Metrocard image used from here: