Appointment Scheduling Software · reliability comparison

Sign In Scheduling (formerly 10to8) vs Square Appointments: which is more reliable? (2026)

Sign In Scheduling (formerly 10to8) is more reliable than Square Appointments, scoring 100.0 vs 53.3 out of 100. Over the last 90 days Sign In Scheduling (formerly 10to8) reported 0 incidents and Square Appointments reported 12, with effective uptime of 100% and 98.93% respectively.

Data updated Nov 1, 2026 · How we score

Sign In Scheduling (formerly 10to8)

100.0/100

Operational

Visit Sign In Scheduling (formerly 10to8) ↗

Square Appointments

53.3/100

Operational

Visit Square Appointments ↗
VS
MetricSign In Scheduling (formerly 10to8)Square Appointments
Reliability score100.053.3
Rank (scheduling apps)#4#9
Uptime (90 days)100%98.93%
Incidents (90 days)012
Partial / major outages00
Avg time to resolve—12h 49m
Outages we detected00
Transparency score100/100100/100

Where Sign In Scheduling (formerly 10to8) and Square Appointments differ

  • Sign In Scheduling (formerly 10to8) reported no incidents in the last 90 days, while Square Appointments reported 12.
  • Sign In Scheduling (formerly 10to8)'s longest outage on record lasted 3h 39m (Jan 23, 2026); Square Appointments's lasted 17h 43m (Apr 30, 2026).

90-day uptime

Sign In Scheduling (formerly 10to8)

Aug 5, 2026 – Nov 2, 2026: no incidents
90 days ago100% average daily uptimeToday

Square Appointments

Aug 5, 2026: 85.00% uptime, 1 incident (Degraded performance)Aug 6, 2026: 85.00% uptime, 1 incident (Degraded performance)Aug 7, 2026: 86.93% uptime, 1 incident (Degraded performance)Aug 8, 2026 – Aug 14, 2026: no incidentsAug 15, 2026: 99.20% uptime, 1 incident (Degraded performance)Aug 16, 2026 – Aug 17, 2026: no incidentsAug 18, 2026: 98.71% uptime, 1 incident (Degraded performance)Aug 19, 2026 – Aug 23, 2026: no incidentsAug 24, 2026: 99.82% uptime, 1 incident (Degraded performance)Aug 25, 2026 – Sep 9, 2026: no incidentsSep 10, 2026: 99.82% uptime, 1 incident (Degraded performance)Sep 11, 2026 – Sep 13, 2026: no incidentsSep 14, 2026: 99.36% uptime, 1 incident (Degraded performance)Sep 15, 2026: no incidentsSep 16, 2026: 99.64% uptime, 1 incident (Degraded performance)Sep 17, 2026: no incidentsSep 18, 2026: 88.11% uptime, 2 incidents (Degraded performance)Sep 19, 2026 – Sep 20, 2026: no incidentsSep 21, 2026: 97.29% uptime, 1 incident (Degraded performance)Sep 22, 2026: 85.00% uptime, 1 incident (Degraded performance)Sep 23, 2026: 85.00% uptime, 1 incident (Degraded performance)Sep 24, 2026: 99.61% uptime, 2 incidents (Degraded performance)Sep 25, 2026 – Sep 26, 2026: no incidentsSep 27, 2026: 97.23% uptime, 1 incident (Degraded performance)Sep 28, 2026 – Nov 2, 2026: no incidents
90 days ago98.953% average daily uptimeToday

Recent Sign In Scheduling (formerly 10to8) incidents

No incidents reported by Sign In Scheduling (formerly 10to8) in the last 90 days.

Full Sign In Scheduling (formerly 10to8) reliability report →

Recent Square Appointments incidents

Full Square Appointments reliability report →

Other scheduling apps to consider

See the full most reliable appointment scheduling software ranking →