TrailSage AI: Road Trip Guide

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About this app

TrailSage AI is your private, offline road trip storyteller.

Designed for deep mountain valleys, scenic highways, and remote national parks where cellular service vanishes, TrailSage AI packages on-device Artificial Intelligence, expressive neural narration, and detailed offline maps to tell you the stories of the land as you drive.

🌟 KEY FEATURES

🧠 LOCAL ON-DEVICE AI
* Powered by Google Gemma 2B and on-device LiteRT.
* Ask questions about surrounding landmarks, local history, geography, or flora and fauna.
* Works completely offline—no cloud APIs, cellular data, or internet connection required.
* Utilizes a localized Retrieval-Augmented Generation (RAG) system for accurate, context-aware responses.

🗣️ NATURAL NEURAL VOICES
* Driven by the Sherpa-ONNX synthesis engine and VITS voice profiles.
* Experience highly expressive, natural human voice tours instead of robotic system text-to-speech fallbacks.
* Choose from multiple voice styles to fit the mood of your adventure.

🗺️ OFFLINE OPENSTREETMAPS
* Explore with fully offline vector maps powered by PMTiles extracts.
* Track paths, trails, roads, and topography with zero latency.
* Seamless navigation HUD designed specifically for driving.

📍 GPS-TRIGGERED NARRATION
* Advanced radius and bearing calculations automatically play stories.
* Hear about historical events and points of interest the exact second you approach a landmark from the correct direction.
* Curated and customizable tour packages.

🔗 ANONYMOUS TRIP SHARING
* Create and share custom itineraries with friends.
* Share links that preview in any web browser with interactive maps, summaries, and directions.
* Import trips directly via deep links.

🔒 PRIVACY-FIRST DESIGN
* Your trip history, routes, and location coordinates stay on your device—never sold or shared.
* On-device AI and narration mean your questions and travels never leave your phone.
* Optional, anonymous diagnostics (Firebase) are OFF by default—you choose whether to share them.
* Supported by non-intrusive ads, with an optional rewards-based ad-free tier.

How to start:
1. Load your tour pack (e.g., Adirondack High Peaks Loop) to download offline maps, routes, and story assets.
2. Follow on-device setup prompts to verify the local Gemma LLM.
3. Install your preferred Piper/VITS voice pack.
4. Turn on GPS, tap "Start Driving," and let the story unfold!


offline gps tour, road trip guide, offline maps, local ai guide, offline tts, national park guide, audio tour guide, travel assistant, gemma llm, local rag, travel storyteller, openstreetmap, adirondacks travel, travel routing
Updated on
Jun 10, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App info and performance, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data isn’t encrypted
Data can’t be deleted

What’s new

Bug Fix and In-App Issue Reporting