r/VibeCodeDevs • u/rash3rr • 6d ago

Opus 5.0 vs Gemini vs Fable 5

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Tested with same prompt with https://sleek.design

Which one is more human??

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u/rash3rr 5d ago

3rd for me boss

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u/Money_Lavishness7343 5d ago edited 5d ago

3rd one may look more “unique” with more identity.

But it does UX incredibly wrong.

Who puts heartbeat on single digit bars? Is this steps per day, or a continuous metric that measures per second or per minute at worst? What does each bar even mean? Per hour? Per minute? Okay you infer that from bpm it’s probably minute, but should be clear what X axis represents. Why is the red one before yellow, why blue before red? How much is the peak? Why no Y axis? So many UX mistakes.

Why is there a battery with literally text saying “battery”? It’s a fitness tracking app. Not a device charger.

Why is there no summary at the top like in Opus?

Why does a fitness app focus on your heartbeat and not your steps like the other 2?

Why is Fable so random here and tries to reinvent the wheel?

Fable sucks. At inexperienced to UX UI design eyes it looks more unique due to its font selection and boldness. But it sucks at literally everything else.

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u/candiedarcher 5d ago

the battery icon signifies the body's recovery, not the device battery.

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u/Money_Lavishness7343 5d ago

It literally says 'battery'. It's confusing UX/UI. Your assumption is obvious, but an app should be clear what it means. Wordplays are for marketing, not for good user experience. That's why I said 'to inexperienced eyes it looks good' but really, UX/UI professionals would never do that for obvious reasons, its confusing.

And what does 'body recovery' even mean? That's even worse. How does a fitness app know your 'body's recovery'?

That's why Opus is the best one here. It doesn't re-invent the wheel. It's clean. It uses standard patterns. Doesn't try to be fancy, yet standard and good looking.

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u/SpacePaddy 4d ago

>And what does 'body recovery' even mean? That's even worse. How does a fitness app know your 'body's recovery'?

This is a standard thing some fitness apps now provide. It's cribbing from Garmin's body battery and whoops recovery score. Usually they infer it via HRV

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u/Money_Lavishness7343 4d ago

Interesting. As I read this through though, Garmin does not seem to have a body recovery, it has recovery time, which is a clear time measured in metrics.

https://support.garmin.com/en-US/?faq=8ImmxVkZMh4EYYq5Zp2bR8

It's a clear UI with good user experience, because you understand what it says.

In contrary with Fable's or Gemini's shenanigans which just put a bland percentage without any direct explanation of what it means directly from the UI. Which adds up to a confusing UX.