From VibeView: we run mobile and TV app tests on cloud devices: iOS, Android, Apple TV, Android TV and Roku. We import Maestro flows, so we have a stake in this question. Every claim below about Detox, Maestro and Appium comes from each tool's own docs, listed at the end.

The short answer. Choose Detox when your app is React Native and you want JavaScript tests, with Detox waiting for the app before each action. Choose Maestro when you want flows anyone can read, on native, React Native, Flutter or web apps. Choose Appium when you need one protocol across many platforms, in your team's own language.

Who should read this

React Native teams picking their first end-to-end tool usually narrow it to Detox or Maestro. Appium belongs in the comparison when the same tests must also cover native apps, a web view or TV. If your app is not React Native, Detox drops out: it is built and documented for React Native apps.

The three side by side

DetoxMaestroAppium
How it sees your appGray box. It tracks the app's state and moves on only once the app is stable.Black box. It acts at the device level, with built-in tolerance instead of manual waits.Through a driver for each platform, behind a server that speaks the W3C WebDriver protocol.
What you writeJavaScript, run by a test runner such as Jest.YAML flows.Code in a language with a client library, such as JavaScript, Java or Python.
Apps it targetsReact Native on iOS and Android.Native iOS and Android, React Native, Flutter, and web.Mobile, desktop, web and TV apps, through drivers.
iOS devicesSimulators. Physical iOS devices are not yet supported.Simulators.Simulators and physical devices.
Android devicesEmulators, attached devices and Genymotion Cloud.Emulators and physical devices.Emulators and devices, through the UiAutomator2 or Espresso driver.
TV appsDoesn't document TV testing.Documents Android TV remote keys. Doesn't list Apple TV or Roku.tvOS and Android TV in official drivers; Roku through a third-party driver.
SetupA native Android test and Gradle changes; a macOS-only tool for iOS simulators.Nothing added to the app. iOS simulators need Xcode on a Mac.The server, a driver for each platform, and a client library.
Hosted runsDoesn't document a cloud of its own; it can use Genymotion Cloud for Android.Maestro Cloud, $250 per device per month. iOS runs on simulators.No cloud from the Appium project; third-party device clouds run Appium tests.
LicenseMIT.Apache 2.0 for the open-source tool.Apache 2.0.

Detox: built around React Native

Detox calls itself a gray-box framework. A test process runs in Node.js on your computer and talks to a client inside the app over a web socket. That inside view lets Detox watch the app's state and take the next action only once the app is stable. That means fewer timing guesses in your tests.

The price is setup. On Android you add a dummy native test, Gradle changes and a network security config. On iOS you install a helper tool that runs only on macOS. Detox's own CI guide, which it marks as outdated, says to test a release build on CI. It warns that Android CI takes more work to set up, and that GitLab's hosted runners can't run Detox because they lack KVM support.

Two limits decide it for some teams. Physical iOS devices are not yet supported. And Expo support is left to the community, not the Detox project.

Maestro: flows that read like steps

Maestro is a black-box tool. It adds no code to your app; its React Native page says you install no npm package. A flow is a YAML list of actions, such as tapping text or typing into a field. Maestro waits for the screen by itself, so a flow needs no manual sleep commands.

Because it reads the screen rather than the app's internals, the same approach covers native, React Native, Flutter and web apps. It also supports Expo Go and development builds. The open-source tool is Apache 2.0. Maestro Cloud runs flows in parallel on hosted devices for $250 per device per month. The device count is set by the most flows you run at once.

Check one limit first: Maestro documents iOS support for simulators, and its cloud runs iOS on simulators too.

Appium: one protocol, many drivers

Appium is an HTTP server that adopted the WebDriver specification as its API. Your test is a program in your own language. A driver connects the server to each platform: XCUITest for Apple devices, UiAutomator2 or Espresso for Android, and many more.

That design gives Appium the widest reach of the three, including physical iPhones and TV platforms. It also has the most pieces to install: the server, a driver per platform and a client library, each installed separately. If you already have a working Appium suite, that setup is paid for.

Testing on TV

If your app also ships on a TV, check this before anything else. Appium's official XCUITest driver lists tvOS, and its UiAutomator2 and Espresso drivers list Android TV. A Roku driver exists, maintained by HeadSpin rather than the Appium team. Maestro documents remote keys for Android TV, and its platform list doesn't include Apple TV or Roku. Detox doesn't document TV testing.

Which to pick for your situation

  • React Native app, team writes JavaScript, flakiness is the pain: Detox. Its sync with the app's own state is the reason to accept its setup.
  • React Native or Expo app, you want tests running this week: Maestro. Nothing goes into the app, and Expo is supported.
  • Native, Flutter or mixed apps, people outside engineering write tests: Maestro. Flows are readable without knowing a programming language.
  • You must test on physical iPhones: Appium. Detox doesn't support them yet, and Maestro documents iOS support for simulators only.
  • One set of tests across phone, web and TV: Appium, if you can staff the setup.
  • You already have working tests in one of them: keep it. Moving between them means writing the tests again, since none of the three reads another's format.

Where VibeView fits

VibeView is not a fourth framework you install. It runs tests on cloud iOS, Android, Apple TV, Android TV and Roku devices, and you create and run them from the dashboard.

If you chose Maestro, you can import your flows from one file or a zipped .maestro folder. Most commands turn into steps written in plain words. The import is free and runs no AI, and flows for TV apps import too. An imported test has no recorded path yet, so its first runs use the AI (beta) and are billed like any AI run. Once a Smart run saves a path, No AI can replay it. A script or a conditional flow is marked for you to rewrite. Detox and Appium tests don't import.

Each run uses one of three modes. Smart replays a recorded or learned path and hands a step to the AI (beta) only when replay can't follow it. No AI only replays a saved path, using no usage credit. AI only lets the AI drive every step. See running tests.

Our limit: iOS, Android, Apple TV and Android TV run on simulators and emulators, not physical hardware. Only Roku is a physical device.

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