Restaurant Reservation Systems · reliability comparison
OpenTable vs ResDiary: which is more reliable? (2026)
OpenTable is more reliable than ResDiary, scoring 100.0 vs 89.9 out of 100. Over the last 90 days OpenTable reported 0 incidents and ResDiary reported 3, with effective uptime of 100% and 99.88% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | OpenTable | ResDiary |
|---|---|---|
| Reliability score | 100.0 | 89.9 |
| Rank (restaurant reservation systems) | — | #2 |
| Uptime (90 days) | 100% | 99.88% |
| Incidents (90 days) | 0 | 3 |
| Partial / major outages | 0 | 2 |
| Avg time to resolve | — | 1h 7m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where OpenTable and ResDiary differ
- OpenTable reported no incidents in the last 90 days, while ResDiary reported 3.
- ResDiary had 2 partial or major outages, compared with 0 for OpenTable.
90-day uptime
OpenTable
ResDiary
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent OpenTable incidents
- MaintenanceOct 26, 2026 · resolved in 2h 30m
A database maintenance has been scheduled on our partner platform..
Affected: Network Access API, Restaurant Partner API
- MaintenanceOct 26, 2026 · resolved in 5m
Affected: Diner Android App, Diner iOS App, Diner Web, Online Booking API
- MaintenanceOct 21, 2026 · resolved in 5m
Affected: Diner Android App, Diner iOS App, Diner Web, Online Booking API
- MaintenanceOct 20, 2026 · resolved in 5m
Affected: Diner Android App, Diner iOS App, Diner Web, Online Booking API
Recent ResDiary incidents
- Major outageSep 24, 2026 · resolved in 2h 5m
uk.resdiary.com is unavailableofficial update ↗
Affected: UK/Europe, North Central US
- Partial outageSep 10, 2026 · resolved in 35m
Affected: Australia
- Degraded performanceSep 8, 2026 · resolved in 43m
Affected: UK/Europe
Other restaurant reservation systems to consider
- Eat App · #1 · 100% uptime
- Zenchef · #3 · 100% uptime
- SevenRooms · #4 · 99.76% uptime
- CoverManager · #5 · 99.35% uptime
See the full most reliable restaurant reservation systems ranking →