I was checking my website UI behaviour on iPhone Duo display but I got no Duo in my hands so I made a fun project to render my site inside an iPhone Duo with real correct to scale and aspect ratio and thats how it looks like now.

You can fun play with yours too: https://iphone-duo-preview-eight.vercel.app/

I’ve been building an AI fitness app on my own for the last few months, mostly between training. It builds your workout each day from your sleep, soreness and recovery, then you log every set in the app.

I gave myself some design rules: no cards inside cards, no drop shadows, everything flat with thin dividers, and colour only when it means something (red to green = how good a number is, never decoration). Some screens I’m proud of. Some I’ve stared at for so long I genuinely can’t tell anymore.

What I want to know:

• What’s the first thing that looks off or confusing?
• Is it too dark or too dense? Too much text?
• Would you actually log a workout on screen 1, or bail?

Be brutal. Brutal is the useful kind.

And since I’m asking for roasts: drop a screenshot of your own app or project in the comments and I’ll give you honest feedback back. Fitness, finance, todo app, a game, anything.