Staged Rollout & Canary Crash Monitor
Ship an app update as a staged rollout — 1% to 5% to 25% to 100% of the install base — while a crash-rate monitor watches the canary cohort against the stable baseline and auto-halts and rolls back the release if a regression trips the threshold.
Real mobile release systems never flip every device to a new build at once. Instead they ramp exposure in stages — 1%, 5%, 25%, then everyone — while an automated monitor compares the canary cohort's crash rate against the stable baseline in real time. This simulator plays out that loop: a population grid shows devices migrating from the old build to the new one stage by stage, crash events flash red as they occur, and a live chart tracks the canary-versus-baseline crash ratio against the halt threshold. Tune how severe the injected regression is and how sensitive the monitor is, then watch whether the rollout completes cleanly or gets caught and rolled back.
A new software version is rolled out to a growing percentage of users. If crash rates increase, the update is halted and reversed.
2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install