Suldduk – A Free App to Help Build Sobriety & Moderation Habits

suldduk - sober app

Why Did I Create a Sobriety App?

Have you ever felt that your focus or learning ability has declined compared to a few years ago?

As someone who transferred to university at an older age and studies programming every day, I felt this issue quite strongly.

Memorization was still fine, but when I faced problems that required understanding, it was definitely harder than before.
After some reflection, I narrowed the causes down to three factors:

Lack of Exercise

→ Running 3km every other day made my mind feel clearer.
AI Dependence

→ I tried coding without GPT, going back to the basics. It was slower, and productivity dropped.
Alcohol Consumption

→ After a month of sobriety, both my learning ability and overall condition drastically improved.

In the end, the biggest culprit was alcohol.

I quit drinking on June 29, and after one month, I realized I needed a simpler way to track my sobriety journey.
That’s why I built Suldduk.

👉 And I hope this app will also help others who are committed to sobriety and moderation.

Suldduk App Features

Simple & Intuitive Sobriety Tracking

Tap the “Sobriety Success” button daily to record whether you stayed sober.
View your progress at a glance on the calendar, with streaks highlighted for motivation.

Calendar & Notes

Successful sober days are clearly marked in green.
You can edit mistakes and add quick notes for each day.

Liver Condition % Measurement

Answer a short survey about your drinking frequency.
The app calculates a % score based on frequency and duration.

Cute App Character

The app icon is a cute personified liver, making it friendly and approachable.

Multi-language Support

Supports English / Japanese
The app follows your phone’s default language, but you can also switch manually in My Page.

Release Info

Platform: Google Play (iOS support planned in the future)
Development: Flutter (cross-platform)
👉 Available now on Google Play

How to Use Suldduk

Tap the “Sobriety Success” Button

→ Record your daily sobriety result.
Check the Calendar

→ Green highlights show your sober days and progress at a glance.
Use the My Page Section

→ Retake surveys, reset data, and change languages anytime.

Why Suldduk is Special

No sign-up required
No data collection
Completely free
Simple, intuitive UI
Calendar designed for motivation

Final Words & Download

Sobriety is not just about quitting alcohol—
it’s about reclaiming your learning ability, health, and quality of life.

👉 Start your sobriety journey today with Suldduk.