Web & Product Analytics · reliability comparison
Fullstory vs Heap: which is more reliable? (2026)
Fullstory is more reliable than Heap, scoring 73.2 vs 44.8 out of 100. Over the last 90 days Fullstory reported 5 incidents and Heap reported 12, with effective uptime of 99.63% and 97.81% respectively. Fullstory resolves incidents faster on average (5h 38m).
Data updated Nov 1, 2026 · How we score
| Metric | Fullstory | Heap |
|---|---|---|
| Reliability score | 73.2 | 44.8 |
| Rank (analytics tools) | #7 | #9 |
| Uptime (90 days) | 99.63% | 97.81% |
| Incidents (90 days) | 5 | 12 |
| Partial / major outages | 2 | 1 |
| Avg time to resolve | 5h 38m | 9h 15m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Fullstory and Heap differ
- Heap reported 2.4× as many incidents as Fullstory over the last 90 days (12 vs 5).
- Fullstory had 2 partial or major outages, compared with 1 for Heap.
- Fullstory fixes problems faster: 5h 38m on average, against 9h 15m for Heap.
- Fullstory's longest outage on record lasted 5h 17m (Sep 1, 2026); Heap's lasted 22h 55m (Jul 12, 2026).
90-day uptime
Fullstory
Heap
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Fullstory incidents
- Partial outageSep 23, 2026 · resolved in <1m
Failure to load assets during playback for sessions (EU1 Data Center)
- Degraded performanceSep 7, 2026 · resolved in 14h 46m
Delayed Session Data Availability for a Subset of NA1 Data Center Orgs
Affected: Fullstory Web Application, Webhooks & Alerts
- Major outageSep 1, 2026 · resolved in 5h 17m
Multiple Fullstory Services Unavailable (NA1 Data Center)official update ↗
Affected: Data Capture - Web, Data Capture - Native Mobile, API, Fullstory Web Application, Fullstory Web Application, Webhooks & Alerts +4 more
- Degraded performanceAug 18, 2026 · resolved in 2h 27m
Delays for Warehouse Customers in NA1 Data Center
Affected: Fullstory Web Application, Fullstory Web Application, Webhooks & Alerts, Webhooks & Alerts, Anywhere: Warehouse, Anywhere: Warehouse
- InformationalAug 7, 2026 · resolved in <1m
Recent Heap incidents
- Degraded performanceOct 14, 2026 · resolved in 6h 41m
User property data delayed in Heap connect syncs (US customers only)
Affected: App, Heap Connect
- Degraded performanceOct 7, 2026 · resolved in 16h 14m
User property data delayed in Heap connect syncs (US customers only)
Affected: App, Heap Connect
- Partial outageOct 2, 2026 · ongoing
Salesforce integration: data-in not syncingofficial update ↗
Affected: Integrations - Sources
- Degraded performanceSep 23, 2026 · resolved in 2h 40m
Heap Connect Syncs: Possibility Of Stale Data
Affected: Heap Connect
- Degraded performanceSep 22, 2026 · resolved in 15h 52m
Third party integration events latency impacting some customers
Affected: App, Integrations - Sources
- InformationalSep 11, 2026 · resolved in 40m
Affected: Heap Connect
Other analytics tools to consider
- Hotjar · #1 · 100% uptime
- Lucky Orange · #2 · 99.98% uptime
- Google Analytics · #3 · 99.89% uptime
- Mixpanel · #4 · 99.84% uptime
See the full most reliable web & product analytics tools ranking →