Surface iPad Pro Tab S3 Pixelbook OS Windows iOS Android Chrome OS Dev stack C#, Visual Studio Swift, Xcode Kotlin, Android Studio Typescript, React Builds via UWP TestFlight APK Chrome Apps Hardware feel — ✓ ✗ — Instant-on ✗ ✓ ✓ ✓ Developer experience ✓ ✓ — ✗ OS control and hackability — ✗ — ✓ Build distribution — ✗ ✓ — Developer community — ✓ — ✗ Android seems to offer the perfect combination of a true mobile platform, a big hardware ecosystem, mature development tools, great build distribution options, and a hackable OS. Setting up test users requires multiple steps of inviting them to your team, waiting for them to reply to invitation emails, then inviting them to the app which in turn requires them to install two different apps (TestFlight and your app) on their device.