Appointment Scheduling Software · reliability comparison
OnceHub vs Zoho Bookings: which is more reliable? (2026)
Zoho Bookings is more reliable than OnceHub, scoring 100.0 vs 74.8 out of 100. Over the last 90 days OnceHub reported 2 incidents and Zoho Bookings reported 0, with effective uptime of 99.67% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | OnceHub | Zoho Bookings |
|---|---|---|
| Reliability score | 74.8 | 100.0 |
| Rank (scheduling apps) | #7 | — |
| Uptime (90 days) | 99.67% | 100% |
| Incidents (90 days) | 2 | 0 |
| Partial / major outages | 2 | 0 |
| Avg time to resolve | 7h 8m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where OnceHub and Zoho Bookings differ
- Zoho Bookings reported no incidents in the last 90 days, while OnceHub reported 2.
- OnceHub had 2 partial or major outages, compared with 0 for Zoho Bookings.
90-day uptime
OnceHub
Zoho Bookings
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent OnceHub incidents
- Partial outageSep 8, 2026 · resolved in 13h 25m
Ongoing maintenance with one of our service providers is causing delays in the delivery of SMS two-factor authentication (2FA) codes, which official update ↗
Affected: User Application
- Partial outageAug 26, 2026 · resolved in 50m
We have identified an issue related to signing in using Microsoft or Google.
Affected: User Application
Recent Zoho Bookings incidents
No incidents reported by Zoho Bookings in the last 90 days.
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 →