Appointment Scheduling Software · reliability comparison
Acuity Scheduling vs Square Appointments: which is more reliable? (2026)
Square Appointments is more reliable than Acuity Scheduling, scoring 53.3 vs 45.5 out of 100. Over the last 90 days Acuity Scheduling reported 7 incidents and Square Appointments reported 12, with effective uptime of 98.16% and 98.93% respectively. Square Appointments resolves incidents faster on average (12h 49m).
Data updated Nov 1, 2026 · How we score
| Metric | Acuity Scheduling | Square Appointments |
|---|---|---|
| Reliability score | 45.5 | 53.3 |
| Rank (scheduling apps) | #10 | #9 |
| Uptime (90 days) | 98.16% | 98.93% |
| Incidents (90 days) | 7 | 12 |
| Partial / major outages | 3 | 0 |
| Avg time to resolve | 15h 44m | 12h 49m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Acuity Scheduling and Square Appointments differ
- Square Appointments reported 71% more incidents than Acuity Scheduling over the last 90 days (12 vs 7).
- Acuity Scheduling had 3 partial or major outages, compared with 0 for Square Appointments.
- Square Appointments fixes problems faster: 12h 49m on average, against 15h 44m for Acuity Scheduling.
- Acuity Scheduling's longest outage on record lasted 3d (Sep 18, 2026); Square Appointments's lasted 17h 43m (Apr 30, 2026).
90-day uptime
Acuity Scheduling
Square Appointments
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Acuity Scheduling incidents
- Degraded performanceOct 23, 2026 · resolved in 2h 16m
Acuity Scheduling / Custom Conversion Tracking integration maintenance
Affected: Acuity Scheduling
- InformationalOct 21, 2026 · resolved in <1m
- Partial outageSep 18, 2026 · resolved in 3d 22h
Acuity Scheduling Admin Mobile app crashing unexpectedly after iOS 27 updateofficial update ↗
Affected: Acuity Scheduling
- Partial outageSep 9, 2026 · resolved in <1m
Acuity Scheduling / Client Scheduling Page showing "SORRY" error
- Degraded performanceAug 20, 2026 · resolved in 17h 44m
Acuity Scheduling - Unable to Connect to Meta
Affected: Acuity Scheduling
- Degraded performanceAug 20, 2026 · resolved in 2h 4m
Acuity Scheduling / Google calendar sync delayed
Affected: Acuity Scheduling
Recent Square Appointments incidents
- Degraded performanceSep 27, 2026 · resolved in 4h 25m
- Degraded performanceSep 24, 2026 · resolved in 12m
- Degraded performanceSep 21, 2026 · resolved in 2d 4h
- Degraded performanceSep 18, 2026 · resolved in 3h 54m
- Degraded performanceSep 18, 2026 · resolved in 15h 7m
- Degraded performanceSep 16, 2026 · resolved in 34m
Other scheduling apps to consider
- Calendly · #1 · 100% uptime
- Doodle · #2 · 100% uptime
- SavvyCal · #3 · 100% uptime
- Sign In Scheduling (formerly 10to8) · #4 · 100% uptime
See the full most reliable appointment scheduling software ranking →