Speed trend
median First Paint + Fully Drawn over time- First Paint
- Fully Drawn Paint
00:0004:0008:0012:0016:0020:00
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App start time and screen load time monitoring
Speed details measures cold start, First Paint and Fully Drawn for every screen on real devices, so you see where launch and screen time actually goes, by version and device.
Speed details First Paint, Fully Drawn and cold start
“Where does screen and cold start time actually go?”
- Sample data
- Ending 24 hrs
- Metric: Median
- All platforms
- All versions
- Trend · Scatter
- Total requests
- 6.1M
- First Paint
- 38 ms
- P90 128 ms · 28% hot
- Fully Drawn
- 52 ms
- long tail: P90 is 4.4× P50
- Cold start
- 3.0 s
- P90 7.9 s · engine init 46%
- v3.1.0 shows 1,956% slower Fully Drawn than v3.2.0
- orderSummaryScreen drives 30% of slow paints
Cold start
Android · median 3.0 s · 911K cold launches · where the time goes (mean)- Process start 152 ms
- App init 1.0 s
- Activity 1.6 s
- Engine init 2.3 s · 46% of launch
Flutter engine init is 46% of cold start. Pre-warming the engine cuts first frame to 1.4 s on the launches that already have it.
Top 5 slowest views / screens
median Fully Drawn Paint · click to drillTop 5 devices
median Fully Drawn Paint · share of samplesSample data on example domains (shop.example.com). Your dashboard shows your own sites and apps.
What you can see on Speed details
- Cold, warm and hot start
- First Paint and Fully Drawn per screen
- Trend and scatter views
- Screen Painting: how each screen rendered
Includes what used to be Screen Painting. Old links redirect here.
Questions about Speed details
What is a good cold start time?
Android treats a cold start of 5 seconds or more as excessive. Aim for well under 2 seconds.
What is Fully Drawn?
The moment the screen shows its real content, reported by the app, not just its first frame.
Last updated 6 Nov 2026 · Reviewed by [Name], [Role]