Free Tools for Mobile Test Engineers

Browser-based utilities for Maestro, Appium, ADB, and device-cloud cost analysis. Built by the DeviceLab team.

Every tool runs 100% in your browser. Nothing is uploaded.

Maestro YAML Validator

Available

Paste or drop a Maestro flow.yaml to catch syntax errors, unknown commands, and missing appId before you run.

Open validator →

ADB Command Builder

Coming soon

Form-driven generator for common ADB commands — install, uninstall, shell, logcat, screencap, and screenrecord.

In development

Appium Capabilities Generator

Coming soon

Generate UIAutomator2 and XCUITest desired capabilities from a simple form. Outputs Java, Python, JS, and JSON.

In development

Maestro Flow Visualizer

Coming soon

Render the structure of a Maestro flow as a tree. Spot deep runFlow nesting and orphaned branches at a glance.

In development

Maestro Flow Diff

Coming soon

Compare two Maestro flows structurally — added commands, changed selectors, reordered steps.

In development

Device-Farm Cost Calculator

Coming soon

Compare BrowserStack, Sauce Labs, LambdaTest, AWS Device Farm, and self-hosted costs for your team size and parallelism.

In development

Why these are free. The more devs use Maestro, Appium, and proper mobile testing, the more our paying customers exist. Tools are good marketing and they're useful — both can be true. Learn what DeviceLab does →