Cloud Storage & Office Suites · reliability comparison
Proton Drive vs Sync.com: which is more reliable? (2026)
Sync.com is more reliable than Proton Drive, scoring 82.1 vs 77.0 out of 100. Over the last 90 days Proton Drive reported 3 incidents and Sync.com reported 1, with effective uptime of 99.65% and 99.82% respectively. Proton Drive resolves incidents faster on average (3h 11m).
Data updated Nov 1, 2026 · How we score
| Metric | Proton Drive | Sync.com |
|---|---|---|
| Reliability score | 77.0 | 82.1 |
| Rank (cloud storage & office suites) | #7 | #6 |
| Uptime (90 days) | 99.65% | 99.82% |
| Incidents (90 days) | 3 | 1 |
| Partial / major outages | 3 | 1 |
| Avg time to resolve | 3h 11m | 7h 33m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Proton Drive and Sync.com differ
- Proton Drive reported 3× as many incidents as Sync.com over the last 90 days (3 vs 1).
- Proton Drive had 3 partial or major outages, compared with 1 for Sync.com.
- Proton Drive fixes problems faster: 3h 11m on average, against 7h 33m for Sync.com (2.4× quicker).
- Proton Drive's longest outage on record lasted 4h 27m (Jan 16, 2026); Sync.com's lasted 7h 33m (Sep 9, 2026).
90-day uptime
Proton Drive
Sync.com
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Proton Drive incidents
- Major outageOct 2, 2026 · resolved in 3h 17m
MacOS Certification Errors on the Proton Meet & Proton Mail apps
Affected: Mobile and Desktop Apps, Desktop Apps
- Partial outageSep 1, 2026 · resolved in 4h 8m
Affected: Web Application, Free servers, Mobile Apps, Web Application, Mobile Apps, Web Application +20 more
- Major outageAug 26, 2026 · resolved in 2h 9m
Affected: Web Application, Free servers, Mobile Apps, Web Application, Mobile Apps, Incoming Mail +18 more
Recent Sync.com incidents
- Partial outageSep 9, 2026 · resolved in 7h 33m
Elevated Upload and Download Errors
Affected: Windows Desktop, Links, Control Panel, Android Mobile Client, Admin tools (Pro Teams), Events +3 more
Other cloud storage & office suites to consider
- Tresorit · #1 · 100% uptime
- SugarSync · #2 · 100% uptime
- ShareFile · #3 · 99.99% uptime
- Egnyte · #4 · 99.94% uptime
See the full most reliable cloud storage & office suites ranking →