TurnBack v1.3.0 (TurnBack Overhaul & Heavy-Glove HUD)

TurnBack v1.3.0 Release Notes

⚡ TurnBack Engine Overhaul & Native Tracking

• Native Background Foreground Service: Robust location tracking with FusedLocationProviderClient, surviving app minimize and aggressive OS battery optimizations.
• Road Curvature & Asymmetric Fatigue Engine: Real-time trajectory geometry analysis adjusting turn-back timing based on outbound speed, fatigue buildup, and grade curvature.
• Adaptive Pacing & Precision TurnBack: Dynamic estimation of turn-back waypoint arrival times with multi-series predictive telemetry.

🧤 Heavy-Glove HUD & Tactical Vector Map

• Heavy-Glove Fullscreen HUD: Engineered for extreme athletic conditions and thick winter/cycling gloves with oversized touch targets (68dp–72dp) and high-contrast OLED styling.
• >90% Vector Canvas: Ultra-low-latency vector map rendering with a 32MB texture cache and seamless dual camera view modes (Dynamic Heading Follow vs. Full Route Overview).
• 72dp Activity Selection Sheet: Streamlined pre-session modal for instant glove-friendly activity configuration (Cycling, Running, Walking, Hiking).

📊 Workout Summary Screen & Telemetry Hub

• Dual Map & Stats Layout: Complete post-session breakdown with interactive route inspection and cadence/pace metrics.
• Interactive Telemetry Graph: Multi-series touch-scrubbing graph with on-the-fly toggles for Speed, Pace, Heart Rate, and Elevation.
• Multi-Format Export Hub: Instant one-tap export to standard endurance formats including GPX, KML, and JSON.

🧪 Test Coverage & Stability

• Added comprehensive unit tests covering adaptive pacing models, asymmetric fatigue curves, road curvature estimations, and calorie expenditure formulas.

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📦 Release Binaries (Split per ABI)

• Offline Flavor:
  • app-arm64-v8a-offline-release.apk (64-bit ARM - modern phones)
  • app-armeabi-v7a-offline-release.apk (32-bit ARM - older devices)
  • app-x86_64-offline-release.apk (x86_64 emulators/devices)
• Colab Flavor (Mesh/P2P):
  • app-arm64-v8a-colab-release.apk (64-bit ARM)
  • app-armeabi-v7a-colab-release.apk (32-bit ARM)
  • app-x86_64-colab-release.apk (x86_64 emulators/devices)