Umbra Sphere vs Walking Map Game

Umbra Sphere is a proof-of-concept app, we use a geospatial technology called "S²Geometry" to store the locations you've visited, identify which country or region they belong to and present them on a map as cleared shadows (umbra). S²Geometry is a geocoding system that divides the Earth's surface into "cells" ranging from 85 million square kilometers to 0.5 square centimeters. These cells are converted into 64-bit integers using the Hilbert curve. Compared with traditional latitude-longitude coordinate system and map projections, S²Geometry is less intuitive, but it avoids significant distortion, delivers globally consistent accuracy, and offers extraordinary indexing and querying performance. With these advantages, Umbra Sphere converts traces into a series integers and stores them in database with appropriate indexes to generate umbra fast in real-time for displaying. It also provides statistical features, presenting the areas of countries or regions you've visited on "visa" cards. Additionally, Umbra Sphere also features a simple S²Geometry visualization tool, allowing you to view S²Geometry cells and their corresponding integer IDs directly on the map. ● Umbra Sphere supports importing these file types: • GPX and KML trace files • Sync files and snapshot files from Fog of World • Backup CSV files from StepLife ● Privacy We respect privacy, and simply do not collect any of your data. All your data are stored in your device. Umbra Sphere does not provide sync feature, you can manually export and import your data.

Walk Map Game turns everyday walks into a simple, fun game on a real-world map. Walk around your city, unlock new areas, collect trophies, and see how many cities and countries you’ve already visited. The app uses a real map and highlights places where you’ve actually been. The more you walk, the more of the world you uncover. What you can do in Walk Map Game - Explore the world by walking Walk through streets, parks, and waterfronts. The app tracks which areas you’ve visited and gradually reveals your personal map. - Unlock map tiles Each newly visited area becomes an unlocked tile. Collect more tiles and watch your explored world grow step by step. - Collect cities and countries Walk in different cities and countries and let the app count them for you. New cities and new countries give you more progress and motivation to move. - Earn trophies for discoveries Get score and trophies for exploring new places. The more you walk and discover, the higher your total trophies. - Compete on the world leaderboard Compare your results with other players: • how many tiles you’ve unlocked • how many cities and countries you’ve visited • how many trophies you have earned - Track your walking distance With Apple Health / HealthKit integration, the app uses your daily walking and running distance (in meters). This turns your real activity into visible progress on the map. - Player profile with iCloud sync Create your profile, choose your name and country, and join the global leaderboard. Your data is stored securely in your iCloud and can be updated in the app settings. Privacy & Safety - Your location and walk data are stored only in your iCloud, linked to your Apple ID. - The app uses HealthKit only to read your walking/running distance. - No third-party servers or external databases. - Designed to be family-friendly and suitable for children according to Apple guidelines. Privacy Policy: https://obrienser.github.io/WalkGameTerms/privacy.html Terms of Service: https://obrienser.github.io/WalkGameTerms/terms.html