Changelog

What we shipped, cut weekly. The browser IDE, the website, the agent factory, and the rnx runtime.

Native previews move to the cloud

Phone previews fetch cloud-built bundles, new users start with prepared projects, and Design gains fluid variants, alongside remote rnx sessions and a new Contrast homepage.

Sep 1, 2026·17 min read

Plan and build from your phone

Mobile brings plans, live agent conversations, previews, and app analytics into one workspace, while notifications, visual feedback, and a typed rnx API make it easier to follow and test the work.

Aug 25, 2026·16 min read

Live updates on your iPhone

Installed iPhone development builds receive live updates, the mobile workspace follows your project, and rnx gains a WebGPU renderer and tools for turning real app screens into 3D films.

Aug 18, 2026·15 min read

From first prompt to live app

Contrast can now put a real build on your own iPhone, hold iOS and Android previews open side by side, and publish deployments as versioned bundles that roll back without a rebuild.

Aug 11, 2026·20 min read

Point, ask, and preview the change

One build pipeline now powers web and native previews, mobile inspection can brief an agent, and SootSim can park inactive surfaces completely.

Aug 4, 2026·18 min read

Contrast brings its own bundler

Contrast bundles React Native apps with its own Metro-compatible bundler, follow mode moves your whole workspace onto the branch an agent is working on, and idle simulator cost fell from about 55% of a core to 8.6%.

Jul 30, 2026·28 min read

One row of panes, built together

The workspace became one row of panes, projects became multiplayer, agent turns moved off the browser into a warm container per project, and the simulator now opens on a live phone.

Jul 23, 2026·26 min read

Agents have to prove their work

Agent builds now have to prove their work before calling it done, every screen of an app builds in parallel, SootSim picked up a public API, and sync pulls stopped shipping an entire snapshot on every poll.

Jul 17, 2026·57 min read

The product becomes Contrast

The product became Contrast top to bottom, with a new brand and a redesigned website; comments and tasks arrived on the design canvas; and the data layer finished its move off Postgres onto native SQLite.

Jul 14, 2026·22 min read

Design surface, and the App Store

A full Design surface for laying out and restyling your whole app, a mobile app rebuilt around a swipeable Develop pager with floating previews, guided TestFlight and App Store shipping, live multiplayer project rooms, and a deep infrastructure pass that moved sync onto Rust and replaced a data-destroying auto-shutdown with non-destructive safeguards.

Jul 7, 2026·29 min read

Generated images and music

Agents can now generate original images and music inside your app, the apps they build come out better-looking by default, your phone turns into a real build cockpit with floating live windows, and SootSim's 3D device mode gets a photorealistic rendering pass.

Jul 4, 2026·24 min read

Custom domains and a mobile remote

Contrast and SootSim unify under one Pro account, the mobile app grows into a full remote with a floating preview and a live React Native runtime, projects gain custom domains, secrets, and integrations, and a deep engine push makes SootSim scroll and animate far closer to a real iPhone.

Jun 25, 2026·36 min read

Contrast comes to your phone

Contrast comes to your phone with a chat-first mobile app and on-device previews, the homepage boots a real IDE instantly, the whole workspace gains light mode, and SootSim adds real splash screens, sharper liquid glass, and end-to-end crypto-wallet support.

Jun 18, 2026·29 min read

Publish, fork, and share your apps

Soot got a community marketplace with forking and rich share cards, clean deploy URLs that hand you a shareable in-browser iOS sim, an AI icon studio, and a hardened agent factory — plus a sweep of SootSim fidelity fixes.

Jun 15, 2026·18 min read

A new editor, now on Cloudflare

Soot went fully Cloudflare-native, replaced Monaco with CodeMirror 6 and an in-browser TypeScript language server, learned to run its agent factory in the cloud, and held green under multi-user load testing at up to 109 concurrent users.

Jun 8, 2026·10 min read