Attendlr
What happens when I use a previous session's roster?
One tap marks everyone present who was at the previous session you picked — and a session is deducted from each of their passes, exactly as if you'd added them one by one.
So after copying the roster, it's worth checking the list: remove anyone you added by mistake, and the session goes straight back onto their pass.
Warning: If detailed payment mode is on and a student has no valid pass, the app still marks them present — their pass balance goes to −1, meaning they owe one session. That's not a bug: it's how you see who still needs to pay.
Tip: How many previous sessions you can pick from: just the most recent one on the Free and Basic plans, the last ten on Pro and Premium.