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Sander B. Profile
Sander B.

@SanderBelaen

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founder of https://t.co/ZqNldqHiUh at 400K users. founder of https://t.co/iRz5OvGpNJ - health app with whoop level health insights using your apple watch, coros, etc👇

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Joined April 2011
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@SanderBelaen
Sander B.
11 months
Tracked my fastest half marathon yet in Ibiza🇪🇸 using: Apple Watch Ultrahuman ring air Whoop 4.0 Here’s how they disagree. 🧵 Happy to answer any questions or show more details!
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@SanderBelaen
Sander B.
4 days
Talk test: you can speak in full sentences. Do 45 to 60 minutes steady. If your heart rate keeps climbing at the same pace, back off next time. Heat and hills make this look worse. Compare similar routes and conditions.
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@SanderBelaen
Sander B.
4 days
Most people don’t do Zone 2. They do a little too hard, every time. Context: I’m building Century AI on top of Apple Health, so I’ve had to get clear on what “easy” should feel like. If you want one simple rule to try:
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@SanderBelaen
Sander B.
4 days
Zone 2: how to tell if you are actually doing it 🧵
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@SanderBelaen
Sander B.
4 days
3 weeks of going back and fort with apple later, we finally have the watch app and widget update live. It’s the apple health app apple should’ve made!
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@SanderBelaen
Sander B.
6 days
After literally 3 weeks of back and forth with apple, the watch app and widget update is finally live. This is the apple health app apple should’ve made!
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@SanderBelaen
Sander B.
8 days
This update made me cancel my whoop subscription
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@SanderBelaen
Sander B.
11 days
you can add this meta tag to your app's website so it shows up like this on X! <meta name="twitter:app:id:iphone" content="YOUR_APP_ID"> https://t.co/CFjLm9qyLw
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@SanderBelaen
Sander B.
11 days
all jokes aside, giant update to century ai shipping today including widgets and the watch app! https://t.co/6f3QeV3Jbq
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@SanderBelaen
Sander B.
11 days
I guess this means Century AI won https://t.co/PsEZt3bViI
Tweet card summary image
apple.com
Apple Newsroom Search Results
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@SanderBelaen
Sander B.
13 days
watch app coming soon as an update btw! https://t.co/6f3QeV3Jbq
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@SanderBelaen
Sander B.
13 days
day 1 of building a whoop competitor until they buy me for 1 million euros. offer goes up by 100k a week. you can just use it with the apple watch btw
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@SanderBelaen
Sander B.
17 days
widgets coming soon as an update to Century AI https://t.co/6f3QeV3Jbq
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@SanderBelaen
Sander B.
17 days
Vo2max widget anyone? I'm SO excited to release this one!
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@SanderBelaen
Sander B.
18 days
If you have any ideas, anything you're missing or particularly love in your current health tracker, please let me know. You can try the app for free with the link below 👇
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@SanderBelaen
Sander B.
18 days
Everything from daily health score ❤️, recovery score 🌱, sleep score 😴, body battery 🔋, workout overviews 🏃, social share features, and even longevity features are already live in the app, and much more is coming soon!
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@SanderBelaen
Sander B.
18 days
That's a software problem, not a hardware problem. That's what I'm tackling. Whoop level health insights, using the watch you're already wearing.
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@SanderBelaen
Sander B.
18 days
However it comes at a cost. 399 euros a year that is. For a strap without a screen. So I'm repetitively paying for-, charging, and wearing an additional device that basically measures all the same things that the Apple Watch already measures, just because their app is better?
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@SanderBelaen
Sander B.
18 days
At the beginning of last year, I got obsessed with my Whoop, the worlds best health monitor. They're unmatched in terms of giving useful, actionable insights into the raw health data it's measuring.
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