Appointment Scheduling Software · reliability comparison
SavvyCal vs Sign In Scheduling (formerly 10to8): which is more reliable? (2026)
SavvyCal and Sign In Scheduling (formerly 10to8) are effectively tied on reliability (100.0 vs 100.0). Over the last 90 days SavvyCal reported 0 incidents and Sign In Scheduling (formerly 10to8) reported 0, with effective uptime of 100% and 100% respectively.
Data updated Nov 1, 2026 · How we score
VS
| Metric | SavvyCal | Sign In Scheduling (formerly 10to8) |
|---|---|---|
| Reliability score | 100.0 | 100.0 |
| Rank (scheduling apps) | #3 | #4 |
| Uptime (90 days) | 100% | 100% |
| Incidents (90 days) | 0 | 0 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | — | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where SavvyCal and Sign In Scheduling (formerly 10to8) differ
- SavvyCal's longest outage on record lasted 27m (Nov 13, 2025); Sign In Scheduling (formerly 10to8)'s lasted 3h 39m (Jan 23, 2026).
90-day uptime
SavvyCal
Sign In Scheduling (formerly 10to8)
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent SavvyCal incidents
No incidents reported by SavvyCal in the last 90 days.
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 →
Other scheduling apps to consider
- Calendly · #1 · 100% uptime
- Doodle · #2 · 100% uptime
- YouCanBookMe · #5 · 100% uptime
- Cal.com · #6 · 100% uptime
See the full most reliable appointment scheduling software ranking →