Muon Tracker vs FieldPrism

Muon Tracker brings the fascinating phenomenon of muon detection right to your device. Designed for science enthusiasts, students, and educators, this app simulates the detection of high-energy muons—particles created when cosmic rays collide with the upper atmosphere—and visualizes them in real time. What it does • Simulates the arrival of cosmic muons based on your current location (latitude, longitude, and altitude). • Accurately models muon flux and angular distribution, including diurnal and seasonal variations. • Detects and visualizes muon tracks with animated directional paths, energy estimates, and impact points on your screen. • Displays real-time rates and calculated flux in particles per second and per square meter. • Offers a data panel where you can explore and export historical events with timestamps, angles, and energy in GeV. Scientific accuracy - Muon Tracker is powered by a physics-based simulation engine that factors in: • Atmospheric depth modeling to vary muon rates with elevation • Geomagnetic latitude effects to reflect regional muon flux • Angular dependency using a cosine-squared distribution to simulate slant tracks • Randomized yet statistically valid energy distributions typical of atmospheric muons The simulation mimics real-world detection environments scaled to your device’s screen size. Whether you’re at sea level or on a mountain, the simulated flux adjusts accordingly. Ideal for • Physics students learning about particle physics and cosmic radiation • Educators demonstrating subatomic phenomena in classrooms • Science fans and curious minds exploring the universe from their pocket Features • Intuitive and elegant SwiftUI interface • Toggle between persistence mode (trails) and flash mode (instant hits) • Auto-switch between track visualization and point hits based on device orientation (vertical ↔ horizontal) • Muon tracks rendered in 3D space, dynamically responsive to device rotation • View location-based detection stats, including GPS position and altitude • Adjust altitude manually to observe its effect on muon flux • Real-time log of muon events, including incidence angle and particle energy • Plot angular distribution of muon track directions • Export your event log as a CSV file for deeper analysis • Works fully offline, with smart location-based initialization Step into the invisible universe. Download Muon Tracker and detect the particles that travel from space through you every second.

App Store Description FieldPrism — Standardized Field Photography for Quantitative Science FieldPrism is designed to standardize the collection of field measurements using our photogrammetric templates. With each photo, you get standardized image orientation and precise scaling to enable simple downstream quantitative measurements — no tripods, no copy stands, and no manual calibration required. Place your specimen on one of our free printable FieldSheets, point your iPhone's camera, and let FieldPrism do the rest. On-device machine learning locates the photogrammetric markers in real time, corrects perspective and rotation, and produces a perfectly scaled image where every pixel corresponds to a known physical distance. The result is a reproducible, measurement-ready image dataset ideal for herbarium specimens, ecological samples, archaeological finds, forensic documentation, geological samples, classroom science, and any field workflow where scale matters. KEY FEATURES • On-device photogrammetric correction — a Core ML model detects ruler markers on your FieldSheet and automatically deskews, rotates, and scales every capture. • Three output images per capture — raw photo, a cropped "FP-Fit" image trimmed to the markers with adjustable padding, and an "FP-Expanded" image preserving the full scene. Each is paired with an overlay showing detected markers. • Known pixel-per-cm conversion factor — exported with every image so measurements in ImageJ, QGIS, Fiji, or any analysis tool are a one-step calculation. You can have FieldPrism output every image with a fixed 100 pixels = 1 cm. scaling. • Six printable FieldSheets included — A3, A4, A5, US Letter, Legal, and Tabloid. Share or AirPrint directly from the app. • Flexible naming workflows — choose QR-code scanning (up to 6 hierarchical levels), timestamp naming, manual entry, or build custom "Rolodex" naming schemes with reusable lists for catalog numbers, sites, plots, or taxa. Lots of ways to name and keep track of the images you take. • Project-based organization — group captures into projects, browse the project gallery, restore accidentally deleted projects, and keep long-running field campaigns tidy. • Optional GPS geotagging — attach precise coordinates to each image for scientific documentation. Toggle on and off at any time. • Customizable capture settings — select any back camera (ultrawide, wide, telephoto), set output resolution in pixels-per-cm, configure padding around markers, and set a "Herbarium Sheet" mode for mounted specimens. • Three live-view modes — see detection bounding boxes in real time, preview a live-deskewed image before you shoot, or frame with a classic viewfinder. PRIVACY FieldPrism does not collect, transmit, or store any of your data. There are no accounts, no analytics, no ads, and no trackers. All image processing happens on your device using Apple's Core ML. Photos, projects, and GPS coordinates stay on your iPhone unless you explicitly export or share them. WHO IT'S FOR • Botanists and herbarium digitization teams documenting pressed specimens • Ecologists and field biologists measuring leaves, fruits, fish, or scat • Archaeologists and forensic scientists recording in-situ finds • Geologists cataloging hand samples • Educators and students running reproducible classroom exercises • Anyone who has ever tried to measure something in a photo GETTING STARTED Print a FieldSheet from the Settings → FieldSheets tab (verify at 100% scale — black squares must be exactly 1 cm wide). Create a project and choose a naming method. Place your specimen on the sheet and capture. FieldPrism handles orientation, scaling, and filename. Export when you're ready. Questions, feedback, or feature requests? Tap the help icon in Settings — we'd love to hear how you're using FieldPrism in the field.