Employee Scheduling Software · reliability comparison
Clockify vs Sling: which is more reliable? (2026)
Clockify is more reliable than Sling, scoring 100.0 vs 94.5 out of 100. Over the last 90 days Clockify reported 0 incidents and Sling reported 2, with effective uptime of 100% and 99.97% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Clockify | Sling |
|---|---|---|
| Reliability score | 100.0 | 94.5 |
| Rank (employee scheduling apps) | — | #8 |
| Uptime (90 days) | 100% | 99.97% |
| Incidents (90 days) | 0 | 2 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | — | 1h 53m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Clockify and Sling differ
- Clockify reported no incidents in the last 90 days, while Sling reported 2.
90-day uptime
Clockify
Sling
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Clockify incidents
No incidents reported by Clockify in the last 90 days.
Recent Sling incidents
- Degraded performanceOct 27, 2026 · resolved in 25m
Affected: Sling by Toast Scheduling
- Degraded performanceOct 14, 2026 · resolved in 3h 20m
10/14/2026 - Sling Latency Issues
Affected: Sling by Toast Scheduling
Other employee scheduling apps to consider
- Buddy Punch · #1 · 100% uptime
- Connecteam · #2 · 100% uptime
- QuickBooks Time · #3 · 100% uptime
- Shiftboard · #4 · 100% uptime
See the full most reliable employee scheduling software ranking →