Is EDOS really ad-free?

Yes, EDOS is designed for pure focus with zero video popups or distracting banners.

Can I solve puzzles from past dates?

Yes, you can access all 365 days of past daily puzzles anytime via the calendar.

Does EDOS work offline?

Yes, EDOS works completely offline without an active internet connection.

🧠 Daily Cognitive Elevation & Focus

Enjoy Sudoku Daily
Without Distracting Ads

Sharpen your mind every single day with 3 daily challenge levels and an unlimited 365-day past puzzle archive. Zero interruptions, pure logic.

💡 Language Notice: EDOS is a universal number logic puzzle available with an intuitive English and Korean interface. Designed with universal symbols so puzzle lovers worldwide can play immediately with zero language barriers.

DAILY CHALLENGE

3 Daily Challenges Every Day

Pick the difficulty that matches your mood. Just 10 minutes a day builds razor-sharp focus and clear logical thinking.

Novice (Easy) 05:20 Cleared ✓

Medium 07:45 Cleared ✓

Hard Playing Now

PAST ARCHIVE

365-Day Unlimited Archive

Missed yesterday's puzzle? No problem. Flip through the monthly calendar to unlock and solve any daily puzzle from the past year anytime.

🏆

Solved: 2026.04.20

Time: 07:53 • Score: 7,332 • Mistakes: 0 🏆

KEY ADVANTAGES

Built for Pure Mental Clarity

No bloat, no gimmicks. Only the timeless satisfaction of solving logic puzzles.

🚫

100% Ad-Free, Pure Focus

Zero disruptive video ads and zero blinking banners. Immerse yourself completely into numbers without breaking your concentration.

📅

365-Day Past Archive

Whether catching up on missed days or enjoying a weekend puzzle marathon, play all 365 past daily puzzles at your own pace.

📊

Private On-Device Stats & Sharing

No account required. Your clear time, score, and error history stay safely on your device. Share your trophy card with friends in one tap.

INTERACTIVE LOGIC PREVIEW

Try Mini Sudoku Instantly

Tap an empty cell and select a number below to test your logic right here!

🎉 Brilliant! Experience full 9x9 daily challenges on the official app.

ELEGANT DESIGN

Sleek, Eyes-Friendly Dark Theme

Meticulously crafted with high-contrast minimalist typography for comfortable solving day or night.

KNOWLEDGE BASE

Frequently Asked Questions

Are there really no disruptive ads while playing? ▼

Absolutely! EDOS is designed for undisturbed mental focus. You will never encounter intrusive video popups or mid-game interruptions.

Can I go back and solve past puzzles? ▼

Yes! Use the built-in calendar view to navigate to any date over the past 365 days and play unlimited past puzzles.

Does it work offline without Wi-Fi? ▼

Yes, EDOS functions seamlessly offline, making it your ideal companion for flights, commutes, and off-grid relaxation.

What languages are supported in the app? ▼

The in-app UI is provided in English and Korean, and uses universal numeric controls so anyone in the world can play effortlessly.

Elevate Your Mind Today

Build a refined daily Sudoku habit. Download EDOS now and experience pure, ad-free focus.