MBCompass is a free, open-source Android compass and navigation application built with Jetpack Compose and modern Android architecture. It provides a digital compass with true/magnetic north support, declination correction, and sensor fusion for accuracy. The app integrates online and offline maps (via OSMDroid and MapsForge), GPS location tracking, and full track recording capabilities including start/pause/resume, GPX export/import, and detailed statistics (distance, speed, elevation, ascent/descent). The UI follows Material Design 3 with support for dynamic theming, AMOLED dark mode, and multiple languages. The architecture follows a feature-based package structure with MVVM pattern, using Hilt for dependency injection, DataStore for user preferences, and Kotlin Serialization for track persistence. Key modules include a foreground service for GPS tracking, a sensor event listener with lifecycle-aware registration, and a repository pattern for track CRUD operations. The app is lightweight (~2 MB), privacy-focused (no ads, no analytics), and supports Android 6+ with target SDK 33+. While the codebase demonstrates solid engineering practices with clean abstractions and reusable UI components, there are signs of technical drift including deprecated LocationListener APIs, scoped storage concerns, and potential library version lag. The project appears actively maintained with recent changelogs, extensive translations, and community engagement via Weblate and GitHub issues.