For small teams checking work before it goes live
Check the work.
Keep the evidence.
Choose the check you need. These free tools calculate in your browser, show their rules, and let you download a report without an account.
Team managers · existing rosters
Shift schedule checker
Paste multiple employee assignments to find overlapping shifts, duplicate rows, short rest gaps and weekly hours above your cap.
Check a roster →Shift workers · one turnaround
Rest between shifts calculator
Enter two shift boundaries, compare your minimum target, and see the earliest next start that provides the interval.
Calculate rest →Bookkeepers · exported records
Invoice payment matching
Reconcile two CSV lists using exact references and counterparties. Keep partial balances and unapplied payments visible.
Match payments →Choose the check that matches your task
Use the roster checker for a full set of assignments and the rest calculator for one gap. Use invoice matching for a single-currency batch with explicit invoice references. Each result covers only the supplied inputs and declared rules; review the source and exceptions before acting.
See why these checks matter
Our 24/7 scheduling test and invoice reconciliation test preserve the first AI outputs, failures and checked evidence. The tools perform deterministic checks; the case studies show the limits of specific AI runs.