FAQ

#What’s the difference between Contrast and rnx?

Contrast is the browser-native app environment: the editor, dev stack, agents, deploy, and production inspection you’re reading about here. rnx is the React Native simulator that powers Contrast’s native preview; it also ships on its own as a CLI you can run against any React Native repo. Its docs live at rnxsim.com/docs/rnx.

#Do I need to install anything to use Contrast?

No. Contrast runs in the browser: edit, run the dev stack, preview, and deploy without local setup.

#Can I start without signing up?

Yes. The editor boots under an anonymous identity, so you can create and edit a project right away. Signing in unlocks AI features and saves your work to your account, and your anonymous project migrates over when you do. See Account and billing.

#Can I import an existing GitHub repo?

Projects start in Contrast. GitHub sync bridges a project to a repo for branch pushes, pull requests, and PR review rather than acting as a general repo importer. See GitHub.

#What templates can I create from?

Three are available: App and Game (full-stack, with a backend and web + iOS) and Website (a frontend-only web template). The welcome picker offers all three starting points, or you can describe what you want and let an agent choose.

#Where do I see prices and usage?

The pricing page has the plan matrix, and the live usage meter in-product shows your remaining AI budget. Account and billing explains how plans and metering work.

#Is there a free tier?

Yes. Building and running locally is free, with a public hosted project and a small lifetime dollar trial. That trial includes one account-wide Cloud Factory so agents work from the browser or mobile app. Pro renews usage monthly and adds Smart routing, private projects, and longer preview history. The pricing page has the current numbers.

#Who pays for a collaborator’s AI usage?

When a collaborator’s agents run AI inside a project they belong to, that usage bills to the project owner. Usage outside a shared project bills to whoever ran it.

#What native platforms can I ship to?

iOS ships through local builds (Simulator and Device), TestFlight, and App Store review. Android is an export path you build yourself with Gradle or EAS; managed Android builds are on the roadmap. See App Store.