Form & Survey Builders · reliability comparison
Cognito Forms vs Formstack Forms: which is more reliable? (2026)
Cognito Forms is more reliable than Formstack Forms, scoring 100.0 vs 90.6 out of 100. Over the last 90 days Cognito Forms reported 0 incidents and Formstack Forms reported 4, with effective uptime of 100% and 99.93% respectively.
Data updated Nov 1, 2026 · How we score
VS
| Metric | Cognito Forms | Formstack Forms |
|---|---|---|
| Reliability score | 100.0 | 90.6 |
| Rank (form & survey builders) | #1 | #9 |
| Uptime (90 days) | 100% | 99.93% |
| Incidents (90 days) | 0 | 4 |
| Partial / major outages | 0 | 2 |
| Avg time to resolve | — | 1h 34m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Cognito Forms and Formstack Forms differ
- Cognito Forms reported no incidents in the last 90 days, while Formstack Forms reported 4.
- Formstack Forms had 2 partial or major outages, compared with 0 for Cognito Forms.
- Cognito Forms's longest outage on record lasted 7h 58m (Apr 24, 2026); Formstack Forms's lasted 20m (Aug 25, 2026).
90-day uptime
Cognito Forms
Formstack Forms
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Cognito Forms incidents
No incidents reported by Cognito Forms in the last 90 days.
Recent Formstack Forms incidents
- Degraded performanceSep 17, 2026 · resolved in 4h 27m
Formstack Forms: Phone Number Field
Affected: Main Application
- Partial outageAug 25, 2026 · resolved in 20m
Affected: Email System (SendGrid)
- Degraded performanceAug 17, 2026 · resolved in 1h 8m
Formstack Forms: Confirmation Email Delivery Issues
Affected: Email System (SendGrid)
- Major outageAug 14, 2026 · resolved in 20m
Formstack Forms: Application Unavailable
Affected: Main Application
Other form & survey builders to consider
- Google Forms · #2 · 100% uptime
- Jotform · #3 · 100% uptime
- Paperform · #4 · 100% uptime
- Tally · #5 · 100% uptime