A team hub and a rotation tool solve different problems
A hub answers the question of where the team lives: the roster, the game schedule, who is available Saturday, the thread where the coach posts a field change. TeamSnap is built at that scope, and for a lot of teams that is exactly the right purchase. Duty is one item inside a much wider product, and it is treated the way any general workspace treats a recurring chore.
SnackRoster answers a narrower question. Who has snack on October 4, who is driving the two players whose parents both work Saturday mornings, and who takes the net shift that starts at 7 in the morning. That is a scheduling problem with fairness rules attached, and it is the part that quietly falls apart in week three of a rec season.
Where allergy flags and carpool consent actually live
On a twelve player roster you will usually find at least one nut allergy and often a dairy or gluten restriction as well. Those flags are only useful if they reach the family whose turn it is, during the week of their turn. SnackRoster keeps them on the family record and puts them in front of the snack parent with the reminder, rather than buried in a message from August.
Carpool has the same problem in a legal shape. A driver assignment means nothing without written parent permission and a driver who has confirmed insurance coverage. If you run two tools, decide up front which one holds those records, because two copies of an allergy list and a consent form is worse than one.
Running both without splitting where parents look
Plenty of rec teams keep a hub for schedule and messaging and use SnackRoster for the duty side. It works when the boundary is stated out loud: games and coach messages in one place, snack, carpool and field duty in the other, with the reminder for a duty date arriving on its own so nobody has to go looking.
It fails when parents have to check two places for the same answer. Say the split once at the parent meeting, put the duty link in the same spot every week, and let the reminders do the chasing. At $8 for One Team, the second tool costs less than one week of team snack for a squad of twelve.