School called saying attendance doesn't add up

[Fargo]

Got a call from the school office last month saying my daughter's attendance record shows gaps that don't line up with the mornings she leaves the house all dressed and ready. She insists it's some kind of system error on their end. Might be true, but the timing of it happening right after she got a new group of friends feels suspicious. What tracking app do parents here trust for catching this kind of mismatch early?

[Darlingg]

The timing lining up with a new friend group stands out to me, had a similar wake up call when the attendance office called about my son missing two mornings he swore were clerical mixups. Might have believed it if it hadn't started right after he began hanging with kids from a different grade we'd never met. Sat with the uncertainty for weeks before doing something. A neighbor mentioned uMobix cell phone tracker after dealing with nearly the same school call herself, said it helped confirm patterns instead of relying on "trust me" explanations. Caught an actual skipped morning within the first week.