Data and Accuracy is NOT accurate
I try to ride exclusively outdoors but certain times it’s just not possible. I have several frustrations with the app but these 3 alone make it not worth having.
Performance accuracy: I have 2 bikes I connect and both have skewed data when doing rides with the app. The accuracy of output watts and hills do my compare to accurate effort. Outdoors with my Ralley pedals and Garmin 1030, I never drop below 17mph on anything under a 5% incline. In the app a 3% incline seems to translate to a 8-9% incline. It’s totally inaccurate and frustrating.
Multiple rides: I’m not a fan of ZWIFT but at least you can just ride and accumulate distance non-stop. Most Tacx rides are only 20 miles long and unless they are in a challenge there’s no way to string them together so if you plan to do a 60-80 mile ride you’ll have to log 4 seperate rides. The results are not accurate because it’s looking at multiple rides vs 1 sustained effort.
Garmin Points: Even if you use your $1000+ TacX trainer and ride using Zwift or Rouvy, Garmin doesn’t give you credit for the ride or towards badges. You have to use their 1990s data integrated TacX app as well.
I have Garmin watches, bike computers, bike lights, bike radars and Ralley pedals and I’m about to get rid of it all because Garmin won’t upgrade the TacX app to make it usable.
Performance accuracy: I have 2 bikes I connect and both have skewed data when doing rides with the app. The accuracy of output watts and hills do my compare to accurate effort. Outdoors with my Ralley pedals and Garmin 1030, I never drop below 17mph on anything under a 5% incline. In the app a 3% incline seems to translate to a 8-9% incline. It’s totally inaccurate and frustrating.
Multiple rides: I’m not a fan of ZWIFT but at least you can just ride and accumulate distance non-stop. Most Tacx rides are only 20 miles long and unless they are in a challenge there’s no way to string them together so if you plan to do a 60-80 mile ride you’ll have to log 4 seperate rides. The results are not accurate because it’s looking at multiple rides vs 1 sustained effort.
Garmin Points: Even if you use your $1000+ TacX trainer and ride using Zwift or Rouvy, Garmin doesn’t give you credit for the ride or towards badges. You have to use their 1990s data integrated TacX app as well.
I have Garmin watches, bike computers, bike lights, bike radars and Ralley pedals and I’m about to get rid of it all because Garmin won’t upgrade the TacX app to make it usable.
Show more
Response from developer
Hi, thank you for your feedback. We will take this feedback with us to improve the app.
Small display
Active workout display arrangement is now smaller- can’t see it without eyeglasses
Vibe coded slop
This app has so many bugs I don’t even know where to begin. It use to be serviceable and now it’s just a nightmare.
Bluetooth issues.
Where’s the timer for power workout. Also we really need to ability to set favourite workouts. To get to vo2 workout takes screens and screen of “load more”.
Good Power Control
Preferred previous, larger metrics in Power Workout UI. Would be nice if there was ability to preprogram specific power settings to jump to with simple Next / Previous buttons: e.g. 50% FTP / specific watts, 80% FTP / specific watts, etc.
Revert back please
The previous version was better than the latest update. Several screens now have reduced functionality. And now contain less information.
Great app but
Certain features could be better.
Why the phone app display does not show pedal strokes (but a laptop app does) is a mystery.
Lastly, why not suggest a ride that is compatible with a suggested workout (eg a flat ride for base training)?
Why the phone app display does not show pedal strokes (but a laptop app does) is a mystery.
Lastly, why not suggest a ride that is compatible with a suggested workout (eg a flat ride for base training)?
Garmin Slop
Day by day worse and worse.
By the state of this app you can tell devs and management don’t test care or have the skill to maintain this small simple app and clearly do not use it themselves. No way to refresh connection or troubleshoot connection to trainer after app fails to send power to trainer. Fails to recover connection properly when you switch app to background. New UI introduce worse UX and broke the previous reliability.
If you write code have the professionalism to run it once or twice prior to making it a customer problem. This app smells.
By the state of this app you can tell devs and management don’t test care or have the skill to maintain this small simple app and clearly do not use it themselves. No way to refresh connection or troubleshoot connection to trainer after app fails to send power to trainer. Fails to recover connection properly when you switch app to background. New UI introduce worse UX and broke the previous reliability.
If you write code have the professionalism to run it once or twice prior to making it a customer problem. This app smells.
Show more
Please bring back the old UI
New UI is horrible! Users want to see data, not stare at an image of some guy on a bike for hours on end. At least give us some options here.
apps!
cantconnect to
other garmim watch app
other garmim watch app
Workout View Changes Suck
They’ve made updates to the workout and have strictly made it worse in terms of appearance, usability, and navgitability.
Appearance: Previously appeared similar to most other cycling platforms and spanned entire window to scale. Now forcibly small with intermittent inability to change power settings without multiple menus.
Usability: Both the mobile app and desktop app now require multiple clicks to get to the places to pause/stop workouts, change settings, and control power/slope. While this is a minor inconvenience for someone sitting at a computer, it’s beyond annoying for somebody mid-workout on the trainer.
Appearance: Previously appeared similar to most other cycling platforms and spanned entire window to scale. Now forcibly small with intermittent inability to change power settings without multiple menus.
Usability: Both the mobile app and desktop app now require multiple clicks to get to the places to pause/stop workouts, change settings, and control power/slope. While this is a minor inconvenience for someone sitting at a computer, it’s beyond annoying for somebody mid-workout on the trainer.
Show more
Manual controls are vibe codes BS
This is one aspect I use daily and have watched degrade over the last 5 years. Who makes the buttons and graphs smaller for a user interaction engaged during movement?
New update is not good
Used to love the app but the recent updates are really poor. No longer shows average power for example. Also the press and hold to quickly increase/decrease the power doesn’t work well any more. Please change this back!
Crashes mid activity now
Literally doing threshold and it just crashes and the trainer loses power due to it. Great job Garmin!
New UI is Terrible
Recently they changed the user interface while riding, and made it worse in every way. The buttons are smaller, the displays are smaller, there’s more menus to click through, and you can no longer hold buttons to change the power. Unfortunately, though I’ve been using Tacx for 7 years, I won’t be returning until the UI is fixed.
Show more
Bad update
Last software update sucks
Glitch
Keeps glitching in power mode the intensity levels can’t adjust halfway through and jumps to 1500w
Update
Hate the update as you cannot view your average heart rate during the power activity.
Terrible update
Numbers too small and screen rearrangement that doesn’t make any sense, the reason I liked this app over any other was, the clean screen, big numbers and no distractions on workouts
They improved the Slope UI (2026)
Updating my review - they made the slope workout UI a little better. Still a lot of wasted space and you have to scroll for the timer. Raising from two to four stars.
