Built by Days

Habit app · iOS, Android and web

Build your city, one good day at a time.

Pick a few things that matter and check them off in one tap. Every day you keep them adds a piece, and finished buildings make up your city.

We only write about the beta and the launch. Unsubscribe in one click. Privacy

During the beta, Premium is free until 31 December 2026.

From one check to a city

  1. 20 min

    A habit

    Check off what you did today, in one tap.

  2. A piece

    A built day sets one piece on the site.

  3. A building

    At 7, 14 or 21 pieces, the building is done.

  4. A city

    Finished buildings settle into your city.

How it works

Three steps. The rest adds up.

  1. Pick what matters

    One goal and a few habits, with a target you can keep: 3 times a week or every day.

  2. Check off in one tap

    One tap per habit. Works offline; it syncs when you are back online.

  3. Watch it grow

    Every built day adds a piece. The finished building joins your city and the next one starts tomorrow.

No guilt

A missed day knocks nothing down.

  • Nothing is lost

    A day without a piece takes nothing away from what you built. XP never goes down.

  • Emergency reserves

    Every 7 successes earn a reserve that keeps your streak through a hard day.

  • Forgot to check in?

    Fill in any day from the last 7, and the piece is placed anyway.

Features

Everything that helps you come back tomorrow.

The core is free forever. Premium adds guidance and personal touches.

  • Your city

    Eight buildings, from the Cottage to the Tower. Level up to unlock new buildings and materials.

  • AI Coach Premium

    Helps you plan your day, come back after a rough patch and adjust your targets.

  • Weekly report Premium

    What worked, the hard days and concrete suggestions for the week ahead.

  • Lights collection Premium

    The Observatory, the Greenhouse and the Lighthouse: premium buildings for your city.

  • Themes and atmosphere Premium

    Neon, Emerald, Rose gold. Your city at dusk or in broad daylight.

  • Widgets

    Today's progress on your home screen. With Premium, your whole city and your week.

In the app

This is how it looks.

  • Today: the building in progress and the day's piece

    Today: the building in progress and the day's piece

  • Your city: finished buildings, side by side

    Your city: finished buildings, side by side

  • The weekly report

    The weekly report

  • The AI Coach

    The AI Coach

Pricing

Free at the core. Premium if you want more.

Planned launch prices, VAT included. During the beta, Premium is free until 31 December 2026.

Free

0 lei forever

  • Habits, check-ins and building
  • The standard buildings and the city
  • Stats, the basic widget
  • Export and account deletion anytime

Premium monthly

24.99 lei / month

  • Everything in Free
  • AI Coach
  • Advanced weekly report
  • Lights collection
  • Themes and city atmosphere
  • Premium widgets

Founding Builders

Premium yearly

169.99 lei / year

First year 129.99 lei, then 169.99 lei / year. Only during the launch.

  • Everything in Free
  • AI Coach
  • Advanced weekly report
  • Lights collection
  • Themes and city atmosphere
  • Premium widgets

7-day free trial

You pay through the App Store or Google Play. Cancel anytime in the store settings.

Your data

Yours stays yours.

Read the privacy policy →
  • Your data stays in the European Union.
  • We don't sell data and show no ads.
  • What you write doesn't train public AI models.
  • Export and delete from the app, anytime.

Questions

When can I use it?

The beta is open now for a small group. Leave your email and we'll write when it's your turn and when it reaches the App Store and Google Play.

Is it free?

Yes. Habits, building, the city, stats and export are free. Premium is optional; during the beta it is free for everyone until 31 December 2026.

What if I miss a day?

Nothing falls down. That day adds no piece, but everything you built stays. You can fill in any day from the last 7, and reserves keep your streak.

Do I need a password?

No. You can start without an account, and to save your progress you get a 6-digit code by email. On your phone, Apple or Google work too.

What does the AI Coach do?

It helps you plan your habits, come back after a break and adjust your targets. It isn't a therapist and gives no medical advice.

How do I delete my account?

In the app or on the web: You → Account → Delete account. The steps and what happens to your data are on the account deletion page.

Lay the first piece today.

Join the beta list. We only write when it's your turn and at launch.

We only write about the beta and the launch. Unsubscribe in one click. Privacy