One big number
Full screen Zero ads
Turn your phone into a clear bike speedometer, readable at a glance from a handlebar mount. Auto-start, BLE cadence & wheel speed, built for OLED. No account, no cloud.
Themes inspired by bike brands, or plain in the colour you pick
Every theme changes the layout and the colours of the ride screen. Pick one in Settings and switch whenever you like.
Just the speedometer
Done properly
GPS speed, no sensors needed
A Kalman filter smooths the GPS readout so the number never jumps. Smart auto-start and auto-pause use a two-layer motion filter (GPS + accelerometer) so measurement begins and stops on its own. No tapping with gloves.
- Smart auto-start & auto-pause
- Kalman-filtered, jitter-free readout
- Calibrate to match your car's speedo (±5 km/h)
Every ride saved, locally and forever
Distance, time, average and max for every ride. A persistent lock-screen notification keeps your numbers visible without unlocking the phone. Long-press to delete.
- Complete per-ride breakdown
- Lock-screen live activity
- Stored on-device, never uploaded
12 number colours. km/h or mph. 50 languages
Pick the colour that reads best on your bars. Switch units instantly. The app follows your phone's language automatically across 50 European locales.
- 12 high-contrast number colours
- km/h · km or mph · mi
- Auto-detected interface language
Screen timeout, brightness, calibration
Dim the display while riding to save battery, set an idle screen-off timeout (GPS keeps tracking in the background), and tune calibration to match your car. Body weight feeds an honest calorie estimate.
- Adjustable ride brightness
- Configurable screen-off timeout
- Speed calibration ±0–10 km/h
Pair a speed & cadence sensor. Get rock-solid numbers
Connect any Bluetooth CSC sensor and DarkSpeed shows live cadence and wheel-derived speed, accurate even in a forest or tunnel, where GPS gives up. Set your wheel circumference to fit any tyre.
- Standard CSC sensor support
- Live cadence & wheel speed
- Adjustable wheel circumference
One payment. Yours for good.
DarkSpeed already records every ride. Pro turns that history into progress you can actually read.
| Feature | Free | Pro |
|---|---|---|
| GPS speedometer with auto-start and auto-pause | Included | Included |
| Ride history, stored on your phone | Included | Included |
| BLE speed and cadence sensors | Included | Included |
| Ride screen themes | Included | Included |
| km/h or mph, and your phone's language | Included | Included |
| Weekly, monthly and yearly totals, drawn as a chart | Not included | Included |
| A calendar of your riding days, in your own colour | Not included | Included |
| Streaks and personal records | Not included | Included |
| Motivational notifications: your week, a beaten record, a nudge after a break | Not included | Included |
| A cadence alert when you drop below or climb above your range | Not included | Included |
| A bike service reminder after the distance you set | Not included | Included |
| Your whole history exported to one file, and back again | Not included | Included |
| The Minimalistic ride screen, and every theme added later | Not included | Included |
| Every Pro feature added later, at no extra cost | Not included | Included |
Bought once, inside the app. No subscription, no account, no cloud.
Your rides stay on your phone
No account
Install, open, ride. No email, no signup.
No cloud
Your rides and stats are stored only on your device.
Anonymous only
Aggregated usage & crash analytics via Firebase: no GPS, no personal data, no ads.
Anyone who just wants to see speed and distance: commutes, weekend rides, road and gravel training. If you don't need maps or a social feed, only a clear GPS speedometer, then DarkSpeed is for you.
Questions, answered.
Do I need extra sensors?
Will it work without signal?
How does it impact battery?
What languages are supported?
What data do you collect?
How much does it cost?
Mount it. Ride it. Read it at a glance.
DarkSpeed is a focused, distraction-free bike speedometer for iOS and Android.