Choosing an Android app development company turns on five things: Kotlin and Jetpack Compose depth, how they test across real devices, their Google Play compliance record, who holds the code and the signing keys, and the post-launch model.
Language and toolchain. Ask whether new work is written in Kotlin with Jetpack Compose or in legacy Java with XML layouts, and ask them to justify the answer. Kotlin is Google's preferred language for Android, and a firm still defaulting to Java on greenfield work should have a reason beyond habit.
Real-device testing. Android fragmentation is a testing problem before it is an engineering one. Ask which physical devices they test on, which manufacturer skins they cover, and how far back their minimum supported API level reaches. An answer that mentions only emulators is a warning sign, because vendor changes to background execution, battery optimisation and notification behaviour are where the surprising defects actually live.
Google Play compliance. Ask about their submission record, how they keep pace with the target SDK level Google raises every year, and how they handle data safety declarations, justifications for sensitive permissions, and the account deletion requirement. Ask explicitly who pays if a submission is rejected.
Ownership. The Google Play Console account, the app signing keys and the cloud infrastructure should all be in your name, and intellectual property should transfer to you. Signing keys held by an agency are one of the hardest dependencies to unwind later, because losing control of them can mean you cannot ship an update to your own users.
After launch. Ask for the maintenance model in writing with a price against it, and ask to see an Android product the firm built and still operates today. Android moves underneath a shipped app every year, so a build with no support arrangement behind it has a shorter life than it looks.
For reference, PixelForce builds Android in Kotlin with Jetpack Compose, tests on real devices across the major manufacturers, holds a 98 percent first-time app store approval rate across 100+ submissions, and runs 100% in-house development from an Adelaide headquarters with the intellectual property and infrastructure in the client's name.