TopoLog: Live Team GPS Tracker
Hike Trail Elevation & Compass
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
TopoLog is a pure local, privacy-first automated tracking and multi-sensor navigation tool built for backcountry explorers, hikers, trail runners, and outdoor squads. No login required, zero server storage, and zero data tracking. Your truest navigation data remains entirely on your device.
Tired of navigation apps that drain your battery in hours, force you to create accounts, and draw straight, ugly lines across your altitude charts after a system sleep? TopoLog solves this with an advanced, motion-triggered sensor fusion engine. It runs silently in the background as an automated "blackbox"—saving your battery by sleeping when you rest, and instantly pulsing into precision logging the moment you move.
=== CORE FEATURES ===
FOOTPRINT-DRIVEN AUTOMATED TRACKING
Forget to hit start or stop at the trailhead? TopoLog automates it. It intelligently drops tracking pins only when your vertical elevation shifts by ≥3 meters or horizontal distance changes by ≥50 meters. Total silence when you are stationary; absolute accuracy when you move. No useless duplicate points cluttering your timeline.
PRO-GRADE ALTIMETER & BAROMETER
By fusing your iPhone's hardware barometer with GPS waterlines entirely on-device, TopoLog delivers highly stabilized, true absolute altitude curves that cancel out weather-induced barometric drifting. Perfect for tracking your precise total ascent and peak elevations on rugged trails.
HARDENED HEADING COMPASS
A pure, instantly responsive orientation companion. Coupled with real-time latitude, longitude, and speed logs, TopoLog's compass keeps your heading true even in deep wilderness areas entirely devoid of cellular or internet signal.
STATELESS TEAM RELAY
Need to monitor your hiking squad’s positions in real-time for safety? Create or join a temporary team room instantly. Running on a stateless relay architecture, group location data is shared purely in-memory and is never written to persistent server disks. Total coordination, zero privacy footprint.
INDOOR FLOOR ESTIMATION
Lost your GPS satellite signal inside a skyscraper, underground transit system, or shopping mall? TopoLog seamlessly transitions to indoor mode, utilizing proprietary barometric pressure windows to accurately deduce your current floor level and vertical climb.
ADAPTIVE FOOTPRINT CHARTS
Review your last 20 footprints via stunning, OLED-friendly graphs. The line style adapts dynamically to your terrain—rendering sharp step-charts for indoor floor changes, and smooth Catmull-Rom curves for outdoor mountain ridges. Time gaps during system sleep are automatically split to preserve the visual truth of your journey.
=== PRIVACY & TECHNICAL SPECS ===
100% Offline Capability: Fully functional in the backcountry without cell tower access. Maps and sensor logs process entirely locally.
GPX 1.1 Compliance: Seamlessly manage, review, and export your single-day tracks to standard GPX files compatible with any professional third-party GIS or mapping software.
Battery-Optimized Core: Micro-engineered background logic utilizing CoreMotion activity states to keep GPS power consumption at an absolute minimum.
Zero Accounts, Zero Ads: Open the app and start exploring instantly. No email, no passwords, no banners.
Experience the raw purity of tracking. Download TopoLog today and secure your ultimate outdoor blackbox.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Offline Music, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Offline Music Tech Limited
- Size
- 8.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
English and 8 more
- English, Arabic, French, Hindi, Japanese, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © @2026 TopoLog