Muon Tracker vs Flashcard Blocker

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.

Every time you reach for Instagram, TikTok, or YouTube, LearnScreen shows you a vocabulary flashcard instead. Turn screen time into learn time — 1,000+ new words a year, passively. You don't fight the phone. You don't add another daily study session. You learn in the exact moments you'd otherwise be scrolling. WHY LEARNSCREEN The average person unlocks their phone 96 times a day. That's 96 wasted micro-moments — or 96 chances to actually learn something. Most language apps fail because they require willpower and a daily streak. Most screen-time blockers fail because they require willpower too. LearnScreen needs neither. It hijacks the impulse you already have and turns it into vocabulary. KEY FEATURES • Smart app blocker — Block distracting apps like TikTok, Instagram, YouTube, X, Reddit, Snapchat with one tap • Vocabulary flashcards on every unlock — Learn words in 11 languages: English, Spanish, German, French, Italian, Portuguese, Russian, Polish, Japanese, Korean, Chinese • Spaced repetition (SM-2, Anki-style, Leitner system) — Words come back at the optimal interval so they actually stick • 1,080+ curated words built in — Or add your own custom word lists • Streak tracking — Build a daily learning habit without daily lessons • Focus mode and Dumb Phone mode — Get the discipline of a feature phone without buying one • Digital detox built in — Less mindless scrolling, more real knowledge • 100% offline and private — No account needed, no data leaves your device • Designed for iPhone — Native, fast, minimalist, no ads HOW IT WORKS 1. Pick which apps to block — TikTok, Instagram, or whatever steals your time 2. Try to open a blocked app 3. A flashcard appears: a foreign word with translation and pronunciation 4. Answer correctly and the app unlocks for a short window 5. Words you learn repeat at scientifically optimal intervals (spaced repetition) 6. Over weeks, your vocabulary compounds while your screen time falls PERFECT FOR • Language learners building vocabulary for English, Spanish, German, French, Italian, Portuguese, Russian, Polish, Japanese, Korean or Chinese • Students preparing for exams (TOEFL, IELTS, SAT, GRE) • Adults rebuilding a daily learning habit • Anyone trying to reduce phone addiction or mindless scrolling • People curious about dumb phones who still need a smartphone • Digital minimalists, ADHD-friendly focus seekers, parents managing their own screen time WHAT MAKES IT DIFFERENT Duolingo asks you to open another app. LearnScreen meets you where you already are — the lock screen. No daily streak guilt. No tutorial maze. Anki is the gold standard for memory but has a steep curve. LearnScreen ships the same SM-2 spaced-repetition algorithm with zero setup — preloaded words, instant card flow, automatic intervals. Pure screen-time blockers (Opal, one sec, ScreenZen) make scrolling harder. LearnScreen makes the alternative more rewarding: every blocked unlock returns something you keep. THE SCIENCE Spaced repetition has been studied for 40+ years — from Ebbinghaus's forgetting curve to modern SM-2 and FSRS implementations. The algorithm shows you each word right before you'd forget it, so 5 reviews lock a word in long-term memory. LearnScreen runs SM-2 by default. Terms of Use: https://learnscreen.vercel.app/terms.html Privacy Policy: https://learnscreen.vercel.app/privacy.html Start turning screen time into learn time. Download LearnScreen.