Topo Maps+ vs Augview Compass

Designed and tested on real dirt, Topo Maps+ is packed with the maps & tools to plan and execute your backcountry adventure. ‣‣ MAPS FOR EVERY ACTIVITY ‣Setup your map based on your planned activity ‣‣ PLANNING TOOLS ‣ Compare and Download maps for use offline. ‣ Combine overlays to customize your map view ‣ Smart route-building tools ‣ Waypoints ‣ Print, email or share custom maps and routes ‣ Public, Private, and Hunting land boundaries ‣ Parcel Information ‣ Create teams and live-share members’ last known location ‣‣ ON-TRAIL TOOLS (Offline) ‣ View your current location ‣ All Maps and Overlays are downloadable ‣ Record your tracks - see where you’ve been ‣ Photo Waypoints - snap a pic and instantly shows on the map ‣ Progress on Trail - how much further on the trail ‣ Guide Me - to a waypoint ‣ Proximity Alerts - notify me when I’m close to a waypoint, trail, or region ‣ Line of Sight - what am I looking at? ‣ Downloaded elevation data for route-creation on the trail ‣‣ APPLE WATCH ‣ Integration with Apple HealthKit ‣Download maps directly to the watch ‣ Pan and zoom the map just like on the phone ‣ Drop a waypoint ‣ Record a track and see all of your stats ‣‣ CARPLAY ‣ Navigate to the trailhead ‣ Turn by Turn directions on USFS Roads ‣‣ NAVIGATIONAL MINDSET - helpful tips and tricks for keeping you safe in the backcountry! ‣‣ SUBSCRIPTION LEVELS: FREE level: view low resolution maps, record your tracks, and limited features Topo Maps+ Pro: high resolution maps, download maps, planning & on-trail tools, driving mode, import geospatial PDFs and TIFFS Topo Maps+ Elite: MapBox Satellite map, US public and private land overlays, parcel and ownership contact info, game management units. ‣‣ CLOUD Sync your routes, trips, subscriptions, and waypoints between all of your iOS and Mac devices. SUBSCRIPTION PAYMENT INFORMATION Topo Maps+ subscriptions will be charged to your Apple ID account at the confirmation of purchase and/or completion of free trial. Subscription automatically renews unless it is canceled at least 24 hours before the end of the free trial or current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Privacy Policy: https://topomaps.co/info/privacy Terms of Service: https://topomaps.co/info/tos Continued use of GPS running in the background can dramatically decrease battery life.

Augview Compass is a high-accuracy compass application supporting: • Compass Deviation Error measurement & correction • Map navigation compass • Augmented Reality compass • Map marker tracking • Works in all orientations Have you been frustrated by Compass apps that claim to be accurate, but turn out to be hopelessly inaccurate or not work at all in certain device orientations? This was one of the drivers for us to create the Augview Compass app - a compass app that is more accurate, that works in all orientations and that provides both a map view and an Augmented Reality (AR) view for ease of use. The accuracy improvement is achieved by first measuring the Compass Deviation Error, and then deriving a function that provides a correction for any observed bearing. Compass Your phone or tablet incorporates various sensors that may be used to determine its location, its orientation and the way in which it is moving. We can compute the compass orientation by using a combination of these sensors. The magnetometer is the primary sensor used to detect magnetic fields. It measures the Earth's magnetic field in three dimensions (X, Y, Z axes) and helps determine the direction relative to Magnetic North. However, the Earth's magnetic field is relatively weak, and the magnetometers used in our phones show high levels of signal noise, when compared with the Earth’s magnetic field strength. To reduce noise in the outputs, filters and smoothing algorithms are used. To improve the accuracy, outputs from the accelerometer and gyroscope are also integrated using a technique known as sensor integration. Using the outputs from these three sensors, filtering algorithms and sensor fusion, we can determine a bearing relative to Magnetic North. The Magnetic North Pole is the point on the earth’s surface at which the planet's magnetic field points vertically downward. The magnetic north pole moves over time. As of 2024, its location is 86° N, 142° East and modelling predicts that by 2025, it will have drifted westward to 138° East. True North refers to the geographic North Pole, the point at the top of the Earth’s axis where all lines of longitude converge. This is the northern point of the Earth’s axis of rotation. True North is essential for mapping and GPS systems, as it provides a consistent reference for determining direction regardless of magnetic variations. The angular difference between Magnetic North and True North is called magnetic declination. This angle varies depending on where you are on Earth and because the north and south magnetic poles move, magnetic declination at a fixed point on the earth’s surface changes over time. Fortunately, there are formulae and web sites that can provide the declination value for any given date and geographic location. To indicate whether a bearing is relative to True North or Magnetic North we use the symbols °T or °M. Compass Calibration The operating system running on your device, allows you to Calibrate the magnetometer, to help reduce error, and to compensate for: • Sensor Drift • Local Magnetic Interference • Sensor and phone manufacturing issues To help reduce these issues, manufacturers recommend rotating the device about each axis, and/or rotating the device in a figure of 8 motion. Augview recommends a systematic approach where you: • Face north to be parallel with the earth’s magnetic field flux lines (to get maximum and minimum magnetic field strengths) • Rotate the device slowly about each axis twice • Hold the device flat and rotate about the vertical axis twice Calibration should be performed regularly, and especially after charging the device or leaving it near other electrical devices. Compass Deviation Error This is the error remaining after magnetometer calibration has been performed. The Augview Compass app incorporates a procedure for measuring and compensating for compass deviation error.