Revyl Documentation

Frameworks

iOS native

Build a native iOS app for Revyl and run it in the dev loop.

Set up with an agent

Paste one prompt and your coding agent does the rest.

Setup prompt

Set up Revyl for this native iOS app.

Read https://docs.revyl.com/frameworks/ios.md and follow it. It's the current Revyl guide for this, so prefer it over anything you remember about Revyl.

Build the app's main scheme in the Debug configuration for the simulator (`-sdk iphonesimulator`). Revyl runs the `.app`, not an `.ipa`.

You're done when a Revyl build of the app succeeds and the app runs on a cloud iOS simulator.

Ask me before anything that needs my login or approval.

Build Guidance

To use the Dev Loop, a build is required on every code change. The binary is the app — see Dev Loop: Hot reload and rebuild configuration for the full breakdown.

To capture sanitizer findings, upload a simulator build compiled with the corresponding sanitizer enabled. See iOS runtime diagnostics for supported diagnostics and how to view findings.

Build via the Revyl CLI

Prerequisites

  • Revyl CLI installed and authenticated (revyl auth login)

Setup

Initialize the project using the Revyl CLI:

revyl init

This detects the Xcode build and writes a named profile with its iOS recipe. Review or fill in the app ID, commands, and output path before the first build.

Run Build

Run a build using: revyl build --profile development --platform ios

This runs the selected recipe in the cloud. If your profile has a different name, pass it explicitly; no profile is active/default. See Configuration.

Advanced Configuration

Revyl makes a best effort to determine the build commands to be used. If the build does not complete successfully modify the build commands manually in the config.yaml file.

Build via XCode UI

Select Simulator

In Xcode toolbar:

  • Choose your app scheme
  • Select any iOS Simulator (e.g., iPhone 15 Pro)

The specific simulator doesn't matter - builds are universal.

Build

  1. Clean: Product → Clean Build Folder (⌘+Shift+K)
  2. Build: Product → Build (⌘+B)
  3. Wait for success

Locate Build

Product → Show Build Folder in Finder

Navigate to:

Build/Products/Debug-iphonesimulator/YourAppName.app

Important: Use Debug-iphonesimulator, NOT Debug-iphoneos.

Test Before Upload

  1. Open iOS Simulator
  2. Drag YourApp.app onto simulator window
  3. Launch from home screen
  4. Verify it works

Always test locally before uploading.

Upload to Revyl

See Ways to Add Builds to upload the build to Revyl.

Auto-Detect Build from DerivedData

If you build in Xcode normally (Cmd+B), revyl dev automatically finds the most recent simulator .app from DerivedData:

# Build in Xcode as usual (Cmd+B), then:
revyl dev --platform ios

The CLI scans ~/Library/Developer/Xcode/DerivedData/ for the most recently modified .app matching your project. Test runner bundles (*Tests.app) are excluded automatically.

Troubleshooting

Dev loop

Swift/iOS

Native iOS uses a rebuild-based dev loop. The CLI detects .xcodeproj / .xcworkspace and configures xcodebuild. During revyl dev, press [r] to rebuild and reinstall. Typical rebuild cycle: ~20-60s.

If an Expo or React Native project is detected as native iOS, run revyl init --detect from the app directory. If detection still cannot resolve the monorepo layout, edit build.framework and the generated profile recipes in .revyl/config.yaml, then run revyl config validate.

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