SaturnXIII

SaturnXIII / Dead-Reckoning-Pro

Public

A GPS-free navigation app for Android (BETA) that uses pedestrian dead reckoning (PDR) to track your position when GPS is unavailable. Built with Android, OSMDroid, and sensor fusion algorithms.

10
2
69% credibility
Found Mar 22, 2026 at 10 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
Java
AI Summary

An open-source Android app for GPS-free navigation using phone sensors, step counting, and map markers.

How It Works

1
📱 Discover the app

You find a handy navigation tool for places where GPS doesn't work, like indoors or tunnels.

2
📥 Install on phone

Download and install the app on your Android phone—it asks for location and motion permissions to work its magic.

3
⚙️ Quick setup

Walk a short distance to calibrate your step length so the app knows how far you move with each step.

4
🗺️ Start tracking

Tap the start button and watch your path draw on the map using your phone's built-in sensors.

5
➕ Mark spots

Add fun emoji markers to important locations and rotate the map to match your direction.

6
🔄 Handle no GPS

Switch to sensor-only mode with turn buttons when signals drop, keeping your path accurate.

✅ Review adventures

Save trips, view history, and export paths to share or use in other mapping apps—navigate freely anywhere!

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Star Growth

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AI-Generated Review

What is Dead-Reckoning-Pro?

Dead-Reckoning-Pro is a Java-based Android app tackling the dead reckoning problem—tracking position without GPS using pedestrian dead reckoning (PDR). It fuses phone sensors for step counting and heading estimation, switching seamlessly to GPS when available, with OSMDroid for maps. Users get free GPS offline navigation on Android, ideal for tunnels or indoors, plus trip recording and exports.

Why is it gaining traction?

It stands out with practical features like draggable emoji map markers, 360-degree map rotation, GPX/CSV exports, and background tracking via foreground service. No GPS mode offers manual turns and a dial for precise heading, solving real dead reckoning procedure gaps in standard apps like Google GPS navigation free alternatives. Developers dig the sensor fusion algorithms for gps free navigation technology, from drones to Raspberry Pi hacks.

Who should use this?

Android devs prototyping indoor navigation or gps free drone navigation apps. Hikers or field researchers needing gps maps voice navigation free in dead zones. Teams exploring dead reckoning programming for cars, quantum nav, or custom gps navigation free download for car Android projects.

Verdict

Grab it if you need GPS-free basics—builds cleanly, docs cover setup—but with 10 stars and 0.699999988079071% credibility score, it's beta-raw; expect drift tweaks and offline map manager adds. Solid PDR starter for niche hacks.

(178 words)

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