E-Signature Software · reliability comparison
Adobe Acrobat Sign vs Formstack Sign: which is more reliable? (2026)
Formstack Sign is more reliable than Adobe Acrobat Sign, scoring 74.1 vs 61.6 out of 100. Over the last 90 days Adobe Acrobat Sign reported 16 incidents and Formstack Sign reported 6, with effective uptime of 99.28% and 99.74% respectively. Adobe Acrobat Sign resolves incidents faster on average (4h).
Data updated Nov 1, 2026 · How we score
| Metric | Adobe Acrobat Sign | Formstack Sign |
|---|---|---|
| Reliability score | 61.6 | 74.1 |
| Rank (e-signature tools) | #10 | #8 |
| Uptime (90 days) | 99.28% | 99.74% |
| Incidents (90 days) | 16 | 6 |
| Partial / major outages | 2 | 1 |
| Avg time to resolve | 4h | 10h 9m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Adobe Acrobat Sign and Formstack Sign differ
- Adobe Acrobat Sign reported 2.7× as many incidents as Formstack Sign over the last 90 days (16 vs 6).
- Adobe Acrobat Sign had 2 partial or major outages, compared with 1 for Formstack Sign.
- Adobe Acrobat Sign fixes problems faster: 4h on average, against 10h 9m for Formstack Sign (2.5× quicker).
- Adobe Acrobat Sign's longest outage on record lasted 1d 4h (Sep 17, 2026); Formstack Sign's lasted 45m (Sep 29, 2026).
90-day uptime
Adobe Acrobat Sign
Formstack Sign
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Adobe Acrobat Sign incidents
- Degraded performanceNov 1, 2026 · resolved in 28m
- Degraded performanceOct 27, 2026 · resolved (duration not published)
- Degraded performanceOct 27, 2026 · resolved in 12m
- Degraded performanceOct 27, 2026 · resolved in 3h 24m
- Degraded performanceOct 25, 2026 · resolved in 1m
- Degraded performanceOct 21, 2026 · resolved in <1m
Recent Formstack Sign incidents
- InformationalOct 9, 2026 · resolved in <1m
Formstack Sign: Some Documents finalized without audit pages
Affected: Documents
- Degraded performanceOct 5, 2026 · resolved in 2h
Sign Integration Authentication Issues
Affected: API & Document Generation, Documents
- Degraded performanceSep 30, 2026 · resolved in 6h 13m
Delayed Documents Deliveries After Sign Completion
Affected: API & Document Generation
- Degraded performanceSep 29, 2026 · resolved in 1d 7h
Formstack Sign API Authentication Issues
Affected: API, Documents
- Partial outageSep 29, 2026 · resolved in 45m
Documents with Sign Delivery are failing
Affected: API & Document Generation
- InformationalSep 28, 2026 · resolved in 9h 59m
Formstack Sign authentication migration
Affected: Main Application, API