King Song vs eBike Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
King Song
Connect to your electric unicycle to view detailed stats, unlock its full speed potential, and customize settings like LEDs and ride modes. Share your experiences, engage with other riders through a social platform, and discover new friends nearby.
- Device stats and connectivity
- Speed unlock and device binding
- Customizable wheel settings (LED, speed, ride mode)
- Social platform for sharing videos
- Engage with other riders (chat, like, comment)
- Rider ranking system
- Locate and connect with nearby riders
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Devices Services: Wheel connectivity: detailed information in regards to device stats. Speed Unlock: Experience your wheels full potential, and then be able to bind your device to your account. Wheel settings: LED, speed, ride mode, music and many other functions. Social Platform: Moments platform: Allows uploads of videos and videos to our social platform. Engage with other riders: chat, comment, like, and share! Ranking: ranking system by day, week and all time. Track your highscore! Riders nearby: Multi-sort functions to locate riders nearby, connect and make new friends! If you are experiencing issues please contact us through the app or Facebook to inform us! Please feel free to send us feedback through the app or via Facebook, thank you!
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 rating: eBike Flow at 4.6 against King Song's 2.5. eBike Flow also leads on review sentiment (51% vs 20%) and ratings volume (2.2K vs 41). King Song's advantage is in-app purchases (none vs 4) and iOS requirement (14.0 vs 18.0). On price, update cadence, ads and device support 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. King Song asks for nothing beyond the download.
eBike Flow holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: eBike Flow has 2.2K ratings behind it against 41, so its average is the more settled of the two. Written reviews point the same way: 20% of King Song's written reviews are positive against 51% of eBike Flow's.
King Song ships an update every 3 weeks, eBike Flow every 6 weeks. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.
| Parameter | King Song | eBike Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (41 ratings) | 4.6 (2.2K ratings) — better |
| Positive reviews | 19.6% of reviews | 51.2% of reviews — better |
| Number of ratings | 41 | 2.2K — better |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 113 MB | 315 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen King Song Technology Co,.LTD | Robert Bosch GmbH |
Customer experience
King Song
eBike Flow
Bugs and requests
King Song
Not enough reviews yet to summarise bugs or requests.
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
King Song
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









