FENR
App Store

FENR FOR IPHONE + APPLE WATCH

Your bike.
Clearly connected.

Live telemetry, road and trail navigation and guarded controls for compatible Stark electric motorcycles. Open source, by design.

Download on the App StoreSee how it works
FENR riding dashboard, recorded with synthetic simulator data
Recorded in FENR
Real interfaceSynthetic ride data
Live telemetryRoad + trail navigationGuarded controlsOpen source

THE WHOLE RIDE, IN ONE PLACE

Everything important.
One glance away.

Start with the ride. Go deeper into navigation, energy and bike care whenever you need to.

DashboardNavigationOffline mapsCardsChargingBatteryControlsAdvanced CurvesHistoryMaintenanceTelemetry

01 LIVE DASHBOARD

Just you. And the ride.

Speed and battery at a glance. Power, regeneration and traction close at hand. A landscape-first display built around the ride.
FENR live riding dashboard

Speed / Battery / Power / Regen / Traction

02 COMPLETE NAVIGATION

Road planned. Trail remembered.

Search Apple Maps, plan road routes, import GPX and record your ride. Follow enduro guidance in either direction with a mini map close at hand.
FENR route planning map with GPX import and ride recording

Road / Enduro / GPX / Recording

03 OFFLINE MAPS

Coming in 1.2

Take the map with you.

Download an area or coverage around a GPX route. Save topographic maps and optional satellite imagery before heading out.
FENR downloaded map area with topographic and satellite coverage ready offline

Areas / GPX coverage / Topographic / SatelliteSearch and calculated road directions still need an internet connection.

04 DYNAMIC CARDS

Your dashboard. Your order.

Speed stays first. Charging appears when you plug in. Show, hide and reorder the other cards, from trip and range to efficiency and ride dynamics.
FENR Dashboard Cards settings with configurable riding cards

8 riding cards / One vertical swipe

05 CHARGING

Charging, without guesswork.

Set supported charging limits now or save them for your next connection. Follow ETA, current and temperature in real time.
FENR charging dashboard with power and charge target controls

Charge target / Power / ETA / Temperature

06 BATTERY HEALTH

Know your battery. Cell by cell.

Inspect state of health, cell spread, voltage deviation, balancing and thermal data from validated live readings.
FENR Battery Health overview
FENR individual battery cell voltages and health distribution

Health / Cell balance / Thermal

07 GUARDED CONTROLS

Five maps. Your response.

Tune power, regenerative braking, traction and regen traction on supported firmware. Protect Bike Lock with an optional PIN and Face ID.
FENR Power Modes showing five configurable base maps

Power / Regen / Traction / Regen traction / Bike Lock

08 ADVANCED CURVES

Fine-tune the way it feels.

Shape power delivery and regenerative braking across the RPM range. Save presets on your iPhone and apply your setup to a supported map when you’re ready.
FENR Advanced Power Modes showing an editable power curve by RPM

Power / Regen / RPM curves / Local presets

09 RIDE HISTORY

A little more from every ride.

Keep distance, time, speed, efficiency, energy use and ride dynamics, then compare recent sessions.
FENR saved ride detail with distance, time, speed and energy statistics

Energy / Dynamics / Ride comparisons

10 MAINTENANCE LOG

Look after the next ride.

Service, repairs, workshop notes and costs in one record. Editable reminders follow the published Stark maintenance guidance.
FENR maintenance entry with service details and reminders

Date / Riding hours / Odometer

11 ADVANCED TELEMETRY

For the curious. And the precise.

Open decoded and raw vehicle values, inspect connection quality and export Bluetooth capture logs for deeper analysis.
FENR live diagnostics with vehicle and connection telemetry

Live values / Raw flags / BLE logs

01 / 11 Explore the app

8configurable riding cards
2navigation modes
5editable base maps

BEYOND THE APP

A glance is all it takes.

On your wrist. On your Lock Screen. Always close.

01 / APPLE WATCH

Your bike.
On your wrist.

Ride and charging telemetry from your paired iPhone. Keep your iPhone connected to the bike and glance at battery, riding mode and charge progress on your wrist.

  • Updates from your paired iPhone
  • Ride and charge dashboards
  • Compact, read-only telemetry
FENR Watch app showing charge percentage, ETA, power and current
Bike data, shared by your iPhone

02 / LIVE ACTIVITIES

Still connected.
Even when locked.

Keep battery, mode and bike state in view on the Lock Screen and Dynamic Island. Plug in, and charging progress stays close too.

  • Battery, speed and ride state
  • Charge target and time remaining
  • Power, current and temperature
FENR riding and charging Live Activities with battery, mode, charge target, time remaining and live charging measurements
Riding and charging, on your Lock Screen

OPEN BY DESIGN

Built in the open.
Controlled by design.

Trust should be inspectable. FENR exposes how telemetry becomes a dashboard, how clean-room interoperability is documented and where every control stops.

Explore FENR on GitHub Protocol research
01

Firmware-aware

Controls appear only when firmware, capability and live telemetry support them.

02

Serialized by design

Vehicle changes are applied one at a time, with safeguards for supported firmware and related settings.

03

Confirmed fresh

Success requires matching telemetry or a fresh read-back from the bike.

04

Inspectable

Implementation and protocol research are public, so boundaries can be reviewed.

AVAILABLE ON THE APP STORE

Take the whole ride with you.

Try the built-in demo with no account or motorcycle. Connect your compatible Stark when you are ready to ride.

Download on the App StoreFor compatible Stark electric motorcycles