If I sign up for PWI Swipe part way through a month, will it round up the transactions I made earlier in the month? Before I signed up? Project World Impact August 15, 2019 21:27 Updated No, we will start rounding up your purchases from the instant you join, not a moment sooner. Related articles Can I download the PWI Swipe app internationally? Comments 0 comments Please sign in to leave a comment.