LTFI (Lock The F*ck In) logo

LTFI (Lock The F*ck In)

Public app Personal / Habits

LTFI is a personal, Portuguese-language habit app. It brings together habit tracking, an AI coach called Balta and focus playlists.

My role. I built LTFI around a weekly habit routine and combined the log, Balta coaching prompts and focus playlists in one app.

See a sample day Open LTFI

A day with LTFI

A fictional routine shows how the daily log, weekly goals and review fit together.

  1. Start with today

    MorningReview today’s habits

    Open the daily view and choose the habits to work on.

  2. Record progress

    During the dayUpdate the weekly grid

    Log progress against the goal and return later to update it.

  3. Review with Balta

    EveningReflect on the day

    Use the review and coach conversation to reflect before the next day.

Design decision I brought the weekly log and daily review together so progress and reflection live in one place.

The problem

I wanted my habits and daily review in one app I could use on my phone.

How it works

  1. Set habits Choose weekly goals and quantities.
  2. Track the week Record progress in a weekly grid.
  3. Review Use Balta for a daily review and conversation.
  4. Focus Open playlists from YouTube or Spotify.

What it includes

  • Weekly habit goals
  • Balta AI coach
  • Focus playlists
  • Local export and backup

Project status

I use the app as a personal habit tracker.

Technical details

Vite, React and TypeScript, with Dexie for local data and a PWA for phone use. Balta uses Cloudflare Workers AI.

  • Vite
  • React
  • TypeScript
  • Dexie (IndexedDB)
  • Cloudflare Workers AI
  • Vercel
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