DarkSpeed: Bike Speedometer

DarkSpeed is a GPS bike speedometer (and more) built for one thing: so you can read your speed at a glance from your handlebar mount. No maps, no account, no clutter. Hop on your bike and the app starts measuring on its own. In short: one big number, full screen, OLED friendly and zero distractions! SMART AUTO-START & AUTO-PAUSE Forget pressing "start" with gloves on. DarkSpeed uses a two-layer motion filter (GPS + accelerometer) that eliminates false triggers: • Auto-start once you pass the speed threshold • Auto-pause after 10 seconds of standing still • No accidental starts when a bus drives past ACCURATE GPS SPEED MEASUREMENT • A Kalman filter smooths the reading — speed won't jump around like on basic GPS apps • GPS + accelerometer fusion: two independent layers confirming motion • km/h offset calibration — match the reading to your car's speedometer • km/h or mph units BLE SENSORS: CADENCE & WHEEL SPEED • If you like, pair a Bluetooth speed & cadence sensor (CSC standard) • Speed measured from wheel revolutions — ultra-accurate and independent of GPS signal quality (forest, tunnel, dense city) • Live cadence straight from the crank • Adjustable wheel circumference LIVE STATS & RIDE HISTORY • Current, max and average speed, distance, ride time • Full ride history saved locally on your phone • Per-ride stats: distance, time, max and average speed, date • Persistent lock-screen notification: average · distance · time — without unlocking your phone DESIGNED FOR OLED SCREENS • Black background = real battery savings on OLED screens • Burn-in protection (subtle pixel shift) • Ride mode with screen dimming • Screen stays on while riding (wake lock) PRIVACY WITHOUT COMPROMISE • No account, no sign-up, no cloud • Your routes and stats never leave your device • We never sell your data SPEAKS YOUR LANGUAGE 50 European languages — English included, of course. The app automatically matches your phone's language. WHO IS IT FOR? DarkSpeed is a bike computer in your phone — for anyone who just wants to see speed and distance: commutes, weekend rides, road and gravel training, amateur cycling. If you don't need maps or a social feed but want a clear GPS speedometer — this is the app for you. Start free with GPS-based speed. And when you want measurements like a classic bike computer, add a BLE sensor (around ~10 EUR) and get turbo-accurate readings straight from the wheel. Download DarkSpeed and turn your phone into a bike computer that just works.