FENR - Unleash your varg
Built for Stark Varg riders
Free · Designed for iPhone. Not verified for macOS.
Get closer to your Stark Varg. See live riding data, monitor charging and battery health, and keep your rides and maintenance together. Try the built-in demo.
YOUR STARK VARG, CONNECTED
FENR is an independent, open-source iPhone app built specifically for Stark Varg riders. Connect to your compatible Stark Varg over Bluetooth to see live motorcycle data, understand your battery and keep your riding information together.
A DASHBOARD FOR YOUR VARG
See speed, battery level, riding mode and motorcycle status in a customizable riding dashboard. Choose the information you want to see and your preferred measurement units.
YOUR DASHBOARD ON APPLE WATCH
See battery level, riding mode, traction and charging information on your Apple Watch, shared by your paired iPhone. The Watch companion is read-only; connect your iPhone to your motorcycle to receive updates.
UNDERSTAND YOUR BATTERY
Monitor charging progress and explore battery diagnostics, including cell-voltage information. On supported Stark Varg firmware, adjust maximum charging power and your battery charge target.
KEEP YOUR RIDES TOGETHER
Review ride history, record maintenance and plan road navigation with Apple Maps. Import GPX routes for your next ride.
TAKE YOUR MAPS OFFLINE
Download an area or the map around a GPX route before your ride. Choose topographic maps and optional satellite imagery, manage saved areas and switch between normal and offline maps from navigation. Road searches and calculated directions still require an internet connection.
TRY FENR BEFORE CONNECTING
Explore the built-in demo without an account or motorcycle. Discover simulated riding, charging and battery scenarios before connecting your own Varg.
COMPATIBILITY
FENR is designed exclusively for compatible Stark Varg motorcycles. Available telemetry and controls depend on your motorcycle and firmware. Bluetooth access is required for a real connection. Road navigation requires an internet connection and depends on Apple Maps availability.
INDEPENDENT AND OPEN SOURCE
FENR is a community-built project, not an official Stark Future application. It is not affiliated with, endorsed by or sponsored by Stark Future. All product names and trademarks belong to their respective owners.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixed an issue that could leave charging power and battery charge-target controls unavailable on some connected motorcycles, including while charging.
The developer, Oscar Antonio Duran Grillo, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Oscar Duran Grillo
- Size
- 65.3 MB
- Category
- Navigation
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Oscar Antonio Duran Grillo
