Stream Sync Engage
A no-code platform for sending targeted, real-time messages to your app users: notifications, surveys, product tours, voicemail, and slideshows. Install the snippet, design the message, schedule the send.

What is Stream Sync Engage?
A live engagement engine built for modern apps that want to go beyond static push. Three ideas, one platform: stream events in real time, keep every device in sync, and engage users with formats that earn a response.
Continuous, real-time delivery. Engagements flow to the right user the moment events unfold, not in a nightly batch.
Context, state, and devices stay aligned. Smart routing reads what the user is doing and reconciles offline cleanly when they return.
Built for two-way interaction. Surveys, voicemail, guided tours, and slideshows. Formats that earn a response, not just a glance.
Built for Real-Time Engagement
Real-Time Delivery
WebSocket-based streaming delivers events instantly to connected clients. Offline devices automatically sync when they reconnect.
AI-Powered Routing
The right message reaches the right user at the right moment. AI-routed targeting reads context and segments, with no manual instrumentation required.
No-Code Composer
Design tours, surveys, and slideshows in the browser. Iterate copy, audience, and timing live, then publish, without a release cycle behind every change.
Seamless Recovery
Never lose an event. Our resync buffer automatically delivers missed engagements when devices come back online.
Experiment & Flag
A/B variants, holdouts, and gradual rollouts. Push functional events and feature updates without app releases, with relevancy windows for time-sensitive content.
Developer-First
Lightweight TypeScript client library with full type safety. A clean, OpenAPI-described surface that gets out of your way.
Features
Start Streaming Today
Install the snippet, design the message, schedule the send. Live in your app in under an hour.