Online Course Platforms · reliability comparison
Kartra vs Simplero: which is more reliable? (2026)
Kartra is more reliable than Simplero, scoring 100.0 vs 94.2 out of 100. Over the last 90 days Kartra reported 0 incidents and Simplero reported 1, with effective uptime of 100% and 99.96% respectively.
Data updated Nov 2, 2026 · How we score
| Metric | Kartra | Simplero |
|---|---|---|
| Reliability score | 100.0 | 94.2 |
| Rank (online course platforms) | — | #5 |
| Uptime (90 days) | 100% | 99.96% |
| Incidents (90 days) | 0 | 1 |
| Partial / major outages | 0 | 1 |
| Avg time to resolve | — | 1h 41m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Kartra and Simplero differ
- Kartra reported no incidents in the last 90 days, while Simplero reported 1.
- Simplero had 1 partial or major outage, compared with 0 for Kartra.
- Kartra's longest incident on record lasted 3h 35m (Nov 18, 2025); Simplero's lasted 2h 54m (Jun 8, 2026).
90-day uptime
Kartra
Simplero
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Kartra incidents
No incidents reported by Kartra in the last 90 days.
Recent Simplero incidents
- MaintenanceSep 16, 2026 · ongoing
Affected: Background processing, Website, API
- Partial outageAug 24, 2026 · resolved in 1h 41m
SSL Certificate Warning on Some Custom Domains
Affected: Website
Other online course platforms to consider
- Circle · #1 · 100% uptime
- Uscreen · #2 · 99.99% uptime
- Mighty Networks · #3 · 99.98% uptime
- Kajabi · #4 · 100% uptime
See the full most reliable online course platforms ranking →