From the dev team
Engineering
Newest first
Newest engineering notes from the Rejourney team.
12 articles
May 26, 2026 · 10 min read
Smartlook Alternatives: What to Use Before Cisco Ends Smartlook
Smartlook is entering end-of-sale and end-of-life. Here is how product, UX, support, and mobile teams should evaluate the next replay and behavior analytics tool.
May 26, 2026 · 9 min read
Hotjar Alternatives: When Heatmaps Are Not Enough
How to evaluate Hotjar alternatives when your team needs replay, heatmaps, journeys, mobile evidence, and technical context in one workflow.
May 26, 2026 · 9 min read
Fullstory Alternatives for Small Teams: Keep Replay Close to the Fix
How indie and small product teams should evaluate Fullstory alternatives when they need replay, journeys, heatmaps, mobile evidence, and debugging context without a heavy rollout.
May 25, 2026 · 10 min read
Product Analytics Tools Show the Event. Rejourney Shows the Moment.
Why events, funnels, and cohorts need replay, journeys, heatmaps, rage clicks, crashes, and API context before teams can fix behavior.
May 25, 2026 · 9 min read
Conversion Funnel Analytics: Catch Friction and Improve Retention
How product analytics, journeys, heatmaps, rage clicks, and replay turn funnel drop-off into a fix list.
May 25, 2026 · 10 min read
Churn is not a number. It is a story of Friction.
How retention metrics, heatmaps, rage clicks, crashes, performance, and replay turn churn analysis into a product repair workflow.
May 18, 2026 · 4 min read
Ambiguity Kills App Growth
Why API errors can hurt mobile user retention more than crashes.
May 06, 2026 · 8 min read
How We Keep Mobile Session Replay 17× Cheaper Than PostHog
The specific engineering decisions and great GDPR providers.
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.
Apr 23, 2026 · 9 min read
Rejourney Hits 1.3 Million Session Replays in 3 Months
Lessons in edge security, durable pipelines, and scaling during a 10x traffic spike.
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.
Feb 06, 2026 · 8 min read
Rejourney Architecture
How we achieved pixel-perfect replay with 3 FPS and zero main-thread impact.