Comparison

Tacx Training™ vs King Song

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tacx Training™

Transform indoor cycling into immersive outdoor experiences. Connect to a smart trainer to simulate real-world terrain and track performance data. Enjoy virtual rides, challenges, and sync with other devices for comprehensive training.

Highlights
  • Simulate real-world climbs and descents
  • Real-time speed, power, and cadence data
  • Automatic trainer resistance adjustment
  • Syncs with Garmin Connect and Coach
  • Virtual GroupRides and challenges
  • Access to 500+ video routes (Premium)
Read full description

RIDE INDOORS, FEEL OUTDOORS Connect your Tacx™ smart trainer with the Tacx Training app to turn indoor sessions into immersive rides. Tackle steep Alpine and Pyrenean climbs or conquer the cobblestones of Roubaix right from your living room. New routes around the world are added every month. TRAIN WITH REAL DATA, IN REAL TIME When paired with a compatible Tacx smart trainer and other accessories, you can see speed, power, cadence, and heart rate data on screen while your trainer resistance auto-adjusts for realistic climbs and descents. Connect with a Tacx Alpine gradient simulator for an even more immersive climbing and descending experience. INTEGRATE WITH OTHER GARMIN PRODUCTS When you finish a workout in the app, the data automatically uploads to the Garmin Connect™ app to update performance stats, inform training plan workout recommendations, and more. Your Garmin Connect workouts are automatically synced with the Tacx Training app. MOTIVATION THAT LASTS Earn badges by completing challenges, ride with others in real time, or organize virtual GroupRides with your Tacx friends. Download and use the app for free, or upgrade to premium at any time. Free: • Create and perform workouts based on slope, power, or FTP • View and complete your scheduled workouts from Garmin Connect and Garmin Coach • Your rides and workouts automatically sync to Garmin Connect for analysis • View your data across phone, tablet, and desktop Premium: • Gain access to more than 500 high-quality video routes • Download your favorite videos and ride offline • See other live riders and ride with others in real time • Participate in multi-stage challenges • Plan virtual GroupRides with friends Requirements: • Bluetooth 4.0 or later for Tacx Smart trainer connections • Internet is required for video streaming and live features Don’t forget to contact our support team if you have any questions, concerns, or feature requests. Official Garmin app.

About

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.

Highlights
  • 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
Features
Read full description

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!

Screenshots

Tacx Training™4 screens
King Song4 screens

Verdict

The call

The clearest difference is rating: Tacx Training™ at 4.6 against King Song's 2.5. Tacx Training™ also leads on ratings volume (16K vs 42) and review sentiment (42% vs 20%). King Song's advantage is monetization model (free vs freemium) and iOS requirement (14.0 vs 16.0). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Tacx Training™ holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Tacx Training™ has 16K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 42% of Tacx Training™'s written reviews are positive against 20% of King Song's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Tacx Training™ versus King Song: the parameters behind the verdict, then further details
ParameterTacx Training™King Song
PriceFreeFree
Rating4.6 (16K ratings) — better2.5 (42 ratings)
Positive reviews41.9% of reviews — better19.6% of reviews
Number of ratings16K — better42
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreemiumFree — better
DevicesiPhone, iPad, MaciPhone, iPod, Apple Watch
Requires iOS16.014.0 — better
Further details — not scored
Size363 MB113 MB
Age rating4+4+
DeveloperGarminShenzhen King Song Technology Co,.LTD

Customer experience

Tacx Training™

All ratings15,851 ratings
Positive90.4%
Neutral4.8%
Negative4.8%
Written reviews737 reviews
Positive41.9%
Neutral12.3%
Negative45.7%

King Song

All ratings41 ratings
Positive34.1%
Neutral7.3%
Negative58.5%
Written reviews92 reviews
Positive19.6%
Neutral16.3%
Negative64.1%

Bugs and requests

Tacx Training™

Reported bugs

5 issues
  • Inconsistent power and speed readings
  • Inability to resume paused rides
  • Connectivity issues with Bluetooth sensors
  • Calibration problems with trainers
  • Compatibility issues with older devices

Requested features

6 requests
  • Ability to download videos for offline use
  • More detailed performance analytics
  • Integration with other fitness apps (e.g. Apple Health)
  • Better customization options for data screens
  • Audio cues and prompts during workouts
Show 1 more
  • Ability to create and edit custom routes

King Song

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Tacx Training™

No in-app purchases

None

King Song

No in-app purchases

Questions

Is Tacx Training™ free?
Tacx Training™ is free to download, with no in-app purchases.
Is King Song free?
King Song is free to download, with no in-app purchases.
Which has better reviews, Tacx Training™ or King Song?
Tacx Training™ is rated higher. Tacx Training™ averages 4.6 out of 5 from 16K ratings, while King Song averages 2.5 from 42 ratings.
Do Tacx Training™ or King Song have ads?
Neither Tacx Training™ nor King Song shows ads.
Which is updated more often, Tacx Training™ or King Song?
Tacx Training™ ships an update every 3 weeks, and King Song every 3 weeks. Most recently, Tacx Training™ was updated on November 1, 2026 and King Song on October 24, 2026.

Other comparisons