Java

Java Android boilerplate with WorkManager built in

For teams that ship Android in Java. ViewBinding for type-safe views, Navigation Component for graph-based routing, WorkManager for reliable background sync, and Room for local persistence. Clerk auth, Supabase with RLS, and BillingClient via Java interop are pre-wired. One purchase, $54, no subscriptions.

WorkManager — background tasks that survive restarts

SyncWorker.java
// WorkManager - background task scheduling
public class SyncWorker extends Worker {
    public SyncWorker(
        @NonNull Context context,
        @NonNull WorkerParameters params
    ) {
        super(context, params);
    }

    @NonNull
    @Override
    public Result doWork() {
        // Sync user data to Supabase in background
        try {
            SyncRepository
                .syncUserData(getApplicationContext());
            return Result.success();
        } catch (Exception e) {
            return Result.retry();
        }
    }
}

// Schedule periodic sync
PeriodicWorkRequest syncWork =
    new PeriodicWorkRequest.Builder(
        SyncWorker.class, 15, TimeUnit.MINUTES)
        .setConstraints(new Constraints.Builder()
            .setRequiredNetworkType(
                NetworkType.CONNECTED)
            .build())
        .build();

WorkManager.getInstance(context)
    .enqueueUniquePeriodicWork(
        "user_sync",
        ExistingPeriodicWorkPolicy.KEEP,
        syncWork);

Stack details

Core technologies

Java
ViewBinding
Navigation Component
WorkManager
Material Design
Room DB
Hilt DI

What's included

Java with ViewBinding
Navigation Component
WorkManager for background tasks
Material Design components
Google Play Billing via Java interop
Room database for persistence
Push notifications via FCM
ViewModel + LiveData pattern
Dependency injection with Hilt
Play Store build configs

How integrations work in Java

Clerk (clerk-android via Java interop)

Clerk Android SDK callable from Java with BiometricPromptCompat and EncryptedSharedPreferences. Social logins, passkeys, and MFA work with Java callback patterns.

Supabase (kotlin-extensions, Java interop)

Supabase Kotlin extensions accessible from Java via coroutine bridge. Suspend functions exposed as callback-based APIs for Java consumers. RLS scoped to the Clerk user ID.

BillingClient (Java interop)

Google Play Billing Library via Java interop — BillingClient, ProductDetails, and purchase flow all work natively. No third-party wrapper. Server-side receipt verification included.

AI Gateway (OkHttp + Java callbacks)

OkHttp client with Java async callbacks. One API key, automatic provider fallback across Grok, OpenAI, Anthropic, and DeepSeek.

Cost comparison

Building this yourself

$16,800+

Plus 8 to 12 weeks of development time

Beyondkitter

$54

One-time payment, all 5 stacks included

Ready to ship with Java?

Auth, database, and background sync wired up. Configure your keys and go.

Get the Java Kit, $54