GPS vs Stormsill

GPS-location-app records walking, running, cycling and riding workouts with detailed route tracking on iPhone, iPad and Apple Watch. It keeps recording where satellite positioning does not. In tunnels, underground car parks, streets between tall buildings and other places a GPS fix is lost or turns unreliable, Velocity Mode carries the route forward from the motion sensors — speed from how the vehicle vibrates, direction from the gyroscope and magnetometer — and rejoins real GPS automatically the moment a usable signal returns. It starts from the last speed actually measured, so the track stays joined up rather than restarting from zero. Velocity Mode is documented rather than asserted. Settings contains the full method, the equations behind it, and the measured error across 23 instrumented journeys — including the cases where it does not work. A complete paper is readable inside the app. FEATURES • Live route tracking during workouts, on iPhone, iPad and Apple Watch • Velocity Mode: keeps recording through tunnels, car parks and weak signal • Automatic handover — no need to switch anything on mid-workout • Workout map with historical route browsing and road alignment • Distance analysis by week, month, year and all time • Daily and cumulative charts for long-term progress • Heart rate, calories, pace, elevation and split tracking • Apple Health integration for workouts and distance • Optional diagnostics logs — the raw sensor data behind every accuracy figure HONEST ABOUT ITS LIMITS Velocity Mode is an estimate, not a substitute for GPS. It is accurate to within a few per cent on open roads and much less so at walking pace, in a hand, or on a motorcycle with the phone in a pocket — a case where it does not work at all. Aircraft speed cannot be recovered without GPS. All of this is measured, written down, and shown in the app rather than hidden. Built for people who want more detail than a basic workout tracker, while keeping recording simple and fast.

A living window you own. On the far side of the glass it's storming — real droplets bead, grow heavy, and race down the pane, wandering and snagging like the real thing. On your side there's a wooden frame, a warm lamp, and nowhere you need to be. Touch the glass and wipe it clean; the rain takes it back. Lightning flickers far away, and the thunder arrives late, soft and rolling, the way it does when the storm is somewhere else. A STORM THAT BREATHES No loops. Your storm swells into a squall, eases into steady rain, settles into a hush — over real minutes, on its own weather. Close the app tonight and it resumes exactly mid-breath tomorrow. The sky beyond the glass follows your real clock: dawn, grey day, dusk, night. NEVER HARSH Every sound is kept soft on purpose — rain with the clatter taken out, thunder that impresses without startling. Made for sleeping, reading, and studying next to. YOUR WINDOW REMEMBERS The sill book keeps a quiet diary: "an evening squall rolled in," "a soft hush settled." Days kept watch, storms witnessed. A sleep timer dims the pane and fades the sound — touching the glass brings the room gently back. FOUR ROOMS The nook is yours forever — warm oak and a potted plant. Supporters open the cabin (firelight that breathes, a steaming mug), the attic (candlelight and old books), and the library (a lamp over a shelf of spines). OUR PROMISES • Zero ads. Ever. • No notifications, no streaks, no guilt. The window just waits. • Nothing is collected. Not even analytics. • Free forever. One optional unlock (three extra rooms), cosmetic only, yours for good. For everyone who ever fell asleep to a rain video and wished they could touch the glass.