The follow-up machine your group chat can't be
Manual follow-up fails for a predictable reason: it depends on one busy person remembering who owes what, and being willing to be the bad guy over and over. Dueflow replaces that with a schedule. When you create a charge, you pick the cadence – every few days, weekly, or a custom interval – and from that point on, every member with an outstanding balance hears from Dueflow instead of from you.
Reminders go out over both email and SMS, because a text gets read even when an inbox doesn't. The messages come from Dueflow with your chapter and charge details, so the social pressure lands on the bill – not on your friendship.