Varia™ vs eBike Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Varia™
Enhance your cycling safety with real-time alerts for approaching vehicles. This app provides visual and auditory warnings, helping you stay aware of your surroundings. It also allows for video recording and incident detection when paired with compatible radar and camera devices.
- Vehicle proximity alerts
- Color-coded traffic indicators
- Tone and vibration notifications
- Video recording and photo capture
- Automatic incident recording
- Headlight and tail light configuration
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When paired with a compatible Garmin Varia radar device¹, the Varia app has the tools you need to ride with confidence. Using the Varia app, you can: • Be alerted right on your phone when approaching vehicles are within 140 meters behind your bicycle. • View color-coded alerts based on surrounding traffic: Green means you’re all clear, yellow means a vehicle is approaching and red means a vehicle is coming at you quickly and you should take caution. • Receive tone and vibration alerts for approaching vehicles even when you’re not looking at your phone. With a compatible Garmin Varia Radar Camera Tail Light or Garmin Varia Vue Camera Headlight, you can: • Set the camera in the best position for capturing videos and photos. • Record videos or take photos and save them while riding with a simple button press on your phone. • Automatically record videos of incidents and save the video footage with the Incident Recording feature. With a Varia Vue Camera Headlight, you can: • Configure light mode configurations for your headlight. • Add an optional Vault subscription, which automatically backs up your Varia Vue videos and provides easy access in the Varia app for searching, filtering and sharing. By adding the Varia eRTL615 Radar Tail Light for eBikes, you can: • Configure and edit light mode configurations for your tail light. Easy to Use Pairing your Garmin Varia devices with the app is quick and easy. Once you set them up, the Varia app will automatically recognize your devices. Even if you already have a Varia device paired with a compatible Garmin device or head unit, the Varia app provides additional awareness and peace of mind while riding. ¹ Compatible devices are the Varia RearVue 820, Varia RVR315 Rearview Radar, Varia RTL515 Radar Tail Light, Varia RCT715 Radar Camera Tail Light, Varia eRTL615 Radar Tail Light for eBikes and Varia Vue Camera Headlight.
eBike Flow
Enhance your eBike experience with smart features for safety, personalization, and comfort. Protect against theft, plan routes, customize riding modes, and track your activities. Keep your eBike updated with the latest functions.
- Theft protection (eBike Lock & Alarm)
- Smart navigation and route planning
- Customizable riding modes
- Activity tracking and fitness analysis
- Over-the-air updates
- Display configuration
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The eBike Flow app makes the riding experience on your eBike with the smart system from Bosch safer, more personalised and more comfortable. Give your eBike additional protection against theft, plan routes and use smart navigation, personalise your riding modes, customise the display and track your activities. You can also benefit from automatic updates. Make your eBike even smarter with the eBike Flow app. The eBike Flow app at a glance • Keep your eBike up to date with updates and make use of the latest functions. • Theft protection: Give your eBike additional protection with eBike Lock and eBike Alarm. • Navigation: Use your phone, Kiox 300 or Kiox 500 for navigation. • Route planning: Plan your route in detail or import it from komoot or Strava. • Activity tracking: Track and analyse your riding and fitness data. • Display configuration: Customise the screen layout of Kiox 300, Kiox 500 and Purion 200. • Custom riding modes: Choose from all the riding modes available for your eBike – and customise them in the usual way. • Help Center: Get quick help with questions about your eBike. Please note: The eBike Flow app is only compatible with eBikes with the Bosch smart system. All the information at a glance The eBike Flow app gives you a clear overview of all the information about your eBike, such as the distance travelled, current battery status or the next service appointment. This way, you always have an overview and can enjoy your next ride. Theft protection with eBike Lock and eBike Alarm eBike Lock and eBike Alarm are the ideal complement to the mechanical lock: eBike Lock is your free additional theft protection. Lock and unlock your eBike automatically using your phone or display as a digital key. Protect your eBike even better with the eBike Alarm premium service: with GPS tracking, notifications and alarm signals on the eBike. Always up to date with updates over-the-air Updates ensure that your eBike is always up to date and gets even better. You can simply download new eBike functions and transfer them to your eBike via Bluetooth. Route planning With the eBike Flow app, you can plan your next Tour to perfection: customise the route with map details and a route profile to suit your needs – or import existing routes from komoot or via GPX. Navigation with phone or display Navigate with your display or use your phone on the handlebar. No matter what you’re riding with, you have all the important riding data at a glance and can conveniently control and stop the navigation via your control unit. Activity tracking The eBike Flow app records your riding data as soon as you set off. In the statistics, you will find valuable insights into your tour and fitness data – to analyse and share, synchronised with Strava or Apple Health. Riding modes perfectly customised to you. With the eBike Flow app, you can customise the riding modes to suit you perfectly. Adapt the support, dynamics, maximum torque and maximum speed to your requirements. Display configuration Customise the screen layout of your Kiox 300, Kiox 500 or Purion 200 to suit your preferences. With over 30 customisation options, you decide for yourself what you see on your display while riding. Fast support with the Help Center Do you have a question about your eBike? Get the answer from our Help Center. Find explanations about functions and components. If you have any problems, you can contact our support team. Terms of Use: https://flow.bosch-ebike.com/legal/terms?region=us
Screenshots
Verdict
The clearest difference is in-app purchases: Varia™ at none against eBike Flow's 4. eBike Flow's advantage is ratings volume (2.1K vs 307). On price, rating, review sentiment and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. eBike Flow sells 4 in-app purchases, starting at $3.99 per month. Varia™ asks for nothing beyond the download.
eBike Flow holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: eBike Flow has 2.1K ratings behind it against 307, so its average is the more settled of the two. Written reviews complicate that: 52% of Varia™'s written reviews are positive against 51% of eBike Flow's, so the app with the better star average is not the one people write more warmly about.
Varia™ ships an update every 2 months, eBike Flow every 6 weeks. Both last shipped on September 28, 2026.
| Parameter | Varia™ | eBike Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (307 ratings) | 4.6 (2.1K ratings) — better |
| Positive reviews | 52.5% of reviews — better | 51.1% of reviews |
| Number of ratings | 307 | 2.1K — better |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 160 MB | 310 MB |
| Age rating | 4+ | 4+ |
| Developer | Garmin | Robert Bosch GmbH |
Customer experience
Varia™
eBike Flow
User reviews
Varia™
From 307 App Store ratingsWhat we love
- 🚀 Reliable and accurate radar detection
- 👍 Provides peace of mind and safety awareness
- 🚗 Alerts users to approaching vehicles
- 🔔 Clear audio and visual alerts
Room to improve
- 🔇 Alert sounds could be louder
- 🔋 High battery consumption on phone
- 🐛 Occasional connectivity issues
- 🔍 Limited functionality compared to Garmin bike computers
eBike Flow
From 2.1K App Store ratingsWhat we love
- 🚀 Smooth and reliable
- 👍 Intuitive and user-friendly
- 🔒 Secure with lock and alarm features
- 💡 Customizable motor modes
- 💡 Integrates with Komoot for route planning
Room to improve
- 🐛 Inconsistent GPS tracking and navigation
- 🔋 High battery drain on smartphones
- 🔍 Limited data export options
- 🤔 Requires smartphone for full functionality
Bugs and requests
Varia™
Reported bugs
3 issues- Incompatibility with older Varia models
- Screen burn-in issues on some phones
- Unreliable video recording and playback
Requested features
4 requests- Apple Watch integration for alerts
- Customizable alert sounds
- Ability to control Varia light settings from app
- More detailed vehicle information (speed, distance, etc.)
eBike Flow
Reported bugs
3 issues- Occasional connectivity issues when pairing bike
- Route planning sometimes generates inaccurate routes
- Ride data not always syncing correctly with Apple Health
Requested features
5 requests- Add support for heart rate sensors
- Improve integration with Garmin devices
- Allow multiple users/phones to be paired with one bike
- Provide offline navigation on Kiox 300 display
- Add option to customize Kiox 300 data screens
In-app purchases
Varia™
No in-app purchases
eBike Flow
- Flow+ (monthly)1 Year trial$3.991 Month
- Flow+ (monthly)1 Month trial$3.991 Month
- Flow+ (year)1 Year trial$34.991 Year
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- Flow+ (year)1 Month trial$34.991 Year






