The missing data link: my switch from Apple Watch Ultra to Garmin Venu 4 as a cyclist

As a developer and avid cyclist, I am always curious about how data can improve my day-to-day life and training. For the longest time, my setup was pretty standard: a Garmin Edge on the bike for my workouts and an Apple Watch Ultra on my wrist for everything else.

But there was a problem: the “data black hole.”

Because I use Join alongside Garmin to manage my training schedule, I ran into a major wall. Garmin doesn’t pull metrics like sleep or recovery from Apple Health. My Edge knew exactly how much power I was putting down during a ride, but it knew absolutely nothing about my recovery, sleep, or overall fatigue. Without that 24/7 context, my Training Readiness score couldn’t be calculated properly, and the workouts Join suggested weren’t adapting to my actual physical state.

That made me decide to change my hardware. This is the story of how and why I switched to the Garmin Venu 4.

The choice: why the Venu 4?

A couple of my cycling friends have Garmin watches and raved about their experience. I knew I needed a Garmin wearable to feed that sweet off-bike data into my ecosystem, but I didn’t want a hardcore running watch like a Forerunner or Fenix. The Garmin Edge handles all my cycling navigation and tracking, I just needed a lifestyle watch that tracks health metrics accurately.

I went with the Garmin Venu 4. It looks great, features a round face (which is more my style), and comes with a reasonable price tag.

The first few weeks: patience is required

I must admit, the first day wasn’t perfect. Setting up the Venu 4 required four separate software updates back-to-back. Why not just package them into one? It’s a small quirk, but the onboarding experience could have been smoother.

More importantly, you can’t just strap on a Garmin and expect instant, life-changing insights. Features like Training Readiness, HRV Status, and overall Health Status require about two to three weeks of continuous wear to establish a baseline. Before that, your training status might just stubbornly say “Unproductive.” Pulse Ox data and broader health trends also take time to appear.

The medication curveball

Just as I got past that initial baseline period, I had an unexpected physiological shift. I recently stopped taking beta-blockers, which naturally keep your heart rate lower. My resting heart rate increased by about 10-15 beats per minute, and my peak output changed as well.

The Garmin immediately noticed. Suddenly, my HRV was flagged as “off,” my training status was red, and the watch assumed I was constantly fatigued. It was fascinating to see the algorithms react to my biology, but it meant I had to start that 2-3 week calibration clock all over again.

By around week four, the Health Status view finally started showing meaningful trends for resting heart rate, HRV, respiration, skin temperature, and pulse oximeter. That was the point where the platform started to feel genuinely useful instead of just “collecting numbers.”

Smartwatch features and the Apple ecosystem hangover

Don’t get me wrong, the Apple Watch Ultra is a vastly superior smartwatch. There are definitely things I miss:

1. Ecosystem integration: I used to walk up to my Mac, and it would seamlessly unlock. Now, I use the fingerprint scanner on my keyboard. It works, and it’s only a second slower, but it’s a slight friction point.
2. Notification handling: Apple clears notifications across all devices once read. Garmin still struggles a bit with this unified approach (limitation by Apple).
3. Screen real estate: Because the Venu 4 is round and has a relatively fat bezel, you lose a lot of corner space. When reading long messages, you have to scroll the text right into the middle horizontal strip of the screen to read it properly.

I’ve also experienced a couple of random freezes where a notification would come in, or I’d start an activity, and the screen would just go black and reboot. It’s not a dealbreaker, but the interface is noticeably less responsive than Apple’s.

Battery life changes behavior

This is where the Venu 4 shines. The battery life actually changes how you interact with the device.

With the Apple Watch, I had a strict daily charging ritual. I rarely wore it to bed because I didn’t want to deal with a dead battery the next day, plus I liked keeping electronics out of the bedroom.

With the Venu 4’s AMOLED display set to “Always On,” I still get a solid week of battery life. In one cycle, it dropped to 58% after about four days and was down to 18% after roughly a week, which lined up with Garmin’s estimate.

When I turned Always On off to test it, I had 69% battery left after four days, with the watch predicting another eight days of life.

Because I don’t have to babysit the battery, I sometimes forget I’m even wearing it. I now sleep with it on every single night, which allows me to finally capture that crucial sleep and recovery data. My charging ritual is now just throwing it on the charger once a week while taking a shower after a hard workout.

Nice to have

The built-in flashlight is a genuinely handy extra. I already used it once when I needed quick light and my phone was not nearby. I probably will not use it every day, but it is a nice-to-have feature when you don’t have your phone on you.

The verdict for cyclists

If you are a cyclist who uses an Edge unit for the real work but relies on an Apple Watch for daily wear, you are missing half the picture.

The Apple Watch is a brilliant smart assistant, but the Garmin Venu 4 acts as an actual training partner. It bridges the gap between rides, taking the guesswork out of recovery. Once you survive the initial setup and the baseline calibration, having your holistic health data dictate your training readiness is a massive upgrade.

For my use case, it is the right middle ground: great for cyclists who already rely on an Edge and want better off-bike data, without paying for running-first features from the Forerunner/Fenix line.

Let me know what you think, or if you’ve made a similar jump!

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