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App UX

The design principles behind the Wellex app.

Last updated: 2026-04-07

One screen

The Today screen shows three things and only three things: today's WVI, today's direction, and yesterday's sleep chart. Anything else is one tap away.

One number

We resisted every temptation to add a second score. Two scores require comparison, comparison requires interpretation, interpretation defeats the purpose.

One direction

The app picks one specific action per day. We never show a list.

No attention economy patterns

  • No streak counters.
  • No achievements.
  • No social leaderboards.
  • No notification spam.
  • No upsell screens.
  • No daily-active-user incentives.

Voice and text

Headlines in Playfair Display, body in Onest, monospace numbers in JetBrains Mono. The numbers are big and quiet, the typography never shouts.