Type 'frio na barriga' and get the same sourced answer as 'butterflies in my stomach'
In Portuguese, a nervous stomach is frio na barriga : "cold in the belly". In Polish it is motylki w brzuchu , in German Schmetterlinge im Bauch , a…
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Designing sleep apps that people don't abandon after three nights
Designing sleep apps that people don't abandon after three nights The sleep app category has one of the worst retention curves in consumer software.…
How Much Water Do You Actually Need? A Science-Backed Hydration Guide
Quick Answer The "8 glasses a day" rule was never a research finding — it originated from a 1945 recommendation that was widely misquoted. How much…
I Built a Hydration Reminder App — Here's What I Learned About Making Notifications That Don't Get Ignored
Every developer I know has built at least one "productivity" side project for themselves. Mine was a water reminder app. Sounds trivial. It was more…
I Built a Free Body Calculator That Shows All Your Numbers in One Report
As a developer who started lifting seriously two years ago, I kept running into the same problem: to understand my body composition, I needed to vis…
I Built a Smarter 20-20-20 App Because Every Other One Annoyed Me
The 20-20-20 rule is a simple habit recommended by optometrists to reduce eye strain: Every 20 minutes, look at something 20 feet away for 20 second…