Marathon Cloud vs Gradle Managed Devices

Gradle Managed Devices provisions Android emulators on the build machine, restores clean state with snapshots and can shard device profiles within that machine’s resources. Marathon Cloud provisions Android emulators and iOS simulators for each run, sizes the pool from suite history and retries failed tests on a different device.

• Where tests run

  Gradle Managed Devices

  Emulators provisioned and run by the Android Gradle plugin on the build machine (or on Firebase Test Lab through its Gradle plugin).

  source

  Marathon Cloud

  Android emulators and iOS simulators, provisioned fresh for every run.

  docs

• Parallelism

  Gradle Managed Devices

  Shards per device profile via android.experimental.androidTest.numManagedDeviceShards; total instances = devices × shards; docs warn provisioning can time out when the machine lacks resources.

  source

  Marathon Cloud

  Device pool sized from your suite's history, targeting 15 minutes per run.

  docs

• Retries and reruns

  Gradle Managed Devices

  Caches results and reruns only tests likely to produce a different result.

  source

  Marathon Cloud

  Failed tests rerun on a different device; tests with a flaky history are retried preventively.

  docs

• Clean state

  Gradle Managed Devices

  Emulator snapshots restore a clean state between tests.

  source

  Marathon Cloud

  Fresh emulator or simulator per run; batching with isolation option.

  docs

• Platforms

  Gradle Managed Devices

  Android only.

  source

  Marathon Cloud

  Android and iOS.

  docs

• Price

  Gradle Managed Devices

  Free; you pay for the CI machine minutes it runs on.

  source

  Marathon Cloud

  $2 per hour per Android device, $3 per hour per iOS device, billed per second. 50 free device hours to start.

  docs

• CI without GPU

  Gradle Managed Devices

  Needs -Pandroid.testoptions.manageddevices.emulator.gpu=swiftshader_indirect on runners such as GitHub Actions.

  source

  Marathon Cloud

  GitHub Action, Bitrise step and Docker image; runs from any CI or your laptop.

  docs

• Getting started

  Gradle Managed Devices

  Free; runs on your CI machine.

  source

  Marathon Cloud

  Self-serve: sign up, 50 free device hours, no credit card, one CLI command. No parallel count to buy — the pool is sized per run.

  docs

Competitor facts verified 2026-09-29 from the vendor's public pages.

A Gradle Managed Devices alternative when one CI machine is no longer enough

Gradle Managed Devices provisions Android emulators and shards on the build machine, with provisioning bounded by that machine’s resources. Marathon Cloud provisions Android emulators and iOS simulators per run and sizes the device pool from suite history to target 15 minutes.