Realm (Atlas Device SDK) on a Mac

On-device object database; MongoDB ended Device Sync and SDK support in 2025 · Mobile App Development

Realm is an object database embedded in mobile apps (Swift, Kotlin, Java, Flutter, React Native, .NET, C++). MongoDB deprecated the Atlas Device SDKs and Device Sync in September 2024 and ended support on 30 September 2025, so Sync-backed apps must move to another sync layer (for example Firebase, Supabase, PowerSync or Couchbase Lite). The local database continues as community-maintained open source with the Sync code removed. Keep it for existing offline-only apps; prefer Room, SwiftData/Core Data or SQLite for new work.

Run Realm (Atlas Device SDK) with FrontierStack

Install or connect Realm (Atlas Device SDK); then check its status, ports and certificate from FrontierStack. The same screen links to firewall checks and backups where they apply.

Related in Mobile App Development

• Flutter
• React Native
• Jetpack Compose
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• Dagger / Hilt
• RxJava
• Room (Jetpack)