Sign-up sheets with slots that cannot be overbooked

Create a sheet with slots and a capacity for each: three parents for the field trip, two for setup, one for cleanup. Members claim a slot, swap to another, or release it.

Capacity is enforced by the server in one atomic step, so a slot is never overbooked, even when two people tap at the same moment.

• Sheets with capacity-limited slots.
• Claim, swap, and release.
• Atomic capacity enforcement.
• Adults create sheets; members sign up.

Room parents, coordinators, and anyone who has managed a sign-up in a spreadsheet.

Who can use it

Adults and kids

Where it works

Your household hub and shared Spaces

Price

Included with every household plan, with no per-app charge

• Potluck
• Meal Train
• Shift Scheduler

• Organizing neighborhood mutual aid that is still running next year — Mutual aid groups do not usually fail from lack of goodwill. They fail on coordination. What to put in place so help is asked for, offered, and tracked.
• How to run a youth team's season without a group chat — A youth season as a system: one team list, the schedule on every family's calendar, RSVPs by a deadline, the roll, and no family sees another's number.
• Running a PTA or booster club year that the next board can pick up — A board in one shared space, parents signing up by link with no account, money tracked against goals, and minutes and elections that outlast the board.
• Sharing a lake house with your siblings without fighting over it — A co-owned house in one shared space: weeks claimed fairly, costs split and saved for, upkeep logged, and the contents and warranties on record.

Volunteer Sign-Up is one of the apps in the Chickadee Bandit library. Every household starts nearly empty and installs only what it uses; there is no per-app charge. Your data lives in your household's own private, encrypted database, with no ads and no data selling. Browse the Clubs & HOAs apps or read the source on GitHub.