Restaurant POS · reliability comparison
Square for Restaurants vs SumUp: which is more reliable? (2026)
Square for Restaurants and SumUp are effectively tied on reliability (53.3 vs 54.2). Over the last 90 days Square for Restaurants reported 13 incidents and SumUp reported 5, with effective uptime of 98.92% and 98.98% respectively. Square for Restaurants resolves incidents faster on average (11h 54m).
Data updated Nov 1, 2026 · How we score
| Metric | Square for Restaurants | SumUp |
|---|---|---|
| Reliability score | 53.3 | 54.2 |
| Rank (restaurant POS systems) | #12 | #10 |
| Uptime (90 days) | 98.92% | 98.98% |
| Incidents (90 days) | 13 | 5 |
| Partial / major outages | 0 | 1 |
| Avg time to resolve | 11h 54m | 19h 59m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Square for Restaurants and SumUp differ
- Square for Restaurants reported 2.6× as many incidents as SumUp over the last 90 days (13 vs 5).
- SumUp had 1 partial or major outage, compared with 0 for Square for Restaurants.
- Square for Restaurants fixes problems faster: 11h 54m on average, against 19h 59m for SumUp.
- Square for Restaurants's longest outage on record lasted 17h 43m (Apr 30, 2026); SumUp's lasted 3h 2m (Jun 27, 2026).
90-day uptime
Square for Restaurants
SumUp
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Square for Restaurants incidents
- Degraded performanceOct 27, 2026 · resolved in 45m
Affected: Point of Sale, Kitchen Display System (KDS)
- Degraded performanceSep 27, 2026 · resolved in 4h 25m
- Degraded performanceSep 24, 2026 · resolved in 12m
- Degraded performanceSep 21, 2026 · resolved in 2d 4h
- Degraded performanceSep 18, 2026 · resolved in 3h 54m
- Degraded performanceSep 18, 2026 · resolved in 15h 7m
Recent SumUp incidents
- Degraded performanceOct 29, 2026 · ongoing
- MaintenanceOct 9, 2026 · ongoing
SEPA instant payments will be delayed due to a scheduled maintenance
Affected: Business Account (EU)
- Degraded performanceSep 5, 2026 · resolved in 7h 6m
Multi-Device-Sync and Kitchen Display System (KDS) are not receiving orders
Affected: Kitchen Display System (KDS), Ordering & Floor Plan
- Degraded performanceSep 3, 2026 · resolved in 6d 2h
Touchscreen not responding on POS devices
Affected: SumUp POS, POS Pro
- Degraded performanceAug 17, 2026 · resolved in 10m
Issue with Logins and Payments Acceptance
Affected: Card Readers: Top & Top NFC, Card Readers: Total, On & Super, Refunds, Solo Cloud API, Payouts, Card Readers: Solo +7 more
- MaintenanceAug 15, 2026 · ongoing
Transactions processing delay in UK
Affected: Business Account (EU)
Other restaurant POS systems to consider
- Shopify POS · #1 · 100% uptime
- SpotOn · #2 · 100% uptime
- Loyverse · #3 · 99.91% uptime
- Clover · #4 · 99.88% uptime