From the dev team
Engineering
Selected track
Native SDK capture, mobile replay internals, maps, and runtime architecture.
3 articles
SDK Technicals
May 05, 2026 · 12 min read
Rejourney Swift Package Is Now in Open Beta
The session state machine, two start paths, URLProtocol swizzle, visual capture backpressure, ANR ping-pong, and crash recovery checkpoints — how the native iOS SDK actually works.
SDK Technicals
Feb 17, 2026 · 4 min read
120Hz Map Performance: Hooking Native SDKs
Solving micro-stutter on Apple Maps, Google Maps, and Mapbox via delegate swizzling.
SDK Technicals
Feb 06, 2026 · 8 min read
Rejourney Architecture
How we achieved pixel-perfect replay with 3 FPS and zero main-thread impact.