Sofnet · h2play.com

Small tools you can try before any explanation

Sofnet is a small dev team building web tools that run right in your browser, plus mobile apps for magic tricks, document search, daily puzzles, and parenting. No sign-up — try first, install later.

Which island shall we visit today?

I follow your mouse · Tap to say hello
About Sofnet

New · Hangul Play

Read your first Korean sounds.

Mix letters, hear Korean, and try saying it. All 399 syllable blocks, free.

Let’s play

Island 1 · Web tools

Try in your browser

Island 2 · Mobile apps

Mobile apps

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App StoreGoogle Play

A route puzzle with Captain Kuro

Kuro’s Little Voyage

Draw a route to collect cargo and return to port. Solve 128 route puzzles across eight ports, collect gifts, and decorate your boat.

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App Store

A color magic tool for performers

Mind Reader: Color Magic

The audience chooses a color through a private browser link; the performer reads it through vibration signals on an iPhone. No audience app installation is needed.

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Google PlayApp Store

Sofnet Magic

Real magic tricks with just your phone

Short, practical phone tricks that reveal a chosen number or color through flashes and vibrations.

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Google Play

DocRecall

Search PDF and Korean documents on your phone

Import PDFs, DOCX, HWPX, plain text and KakaoTalk exports by the folder, then search by keyword or by meaning.

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Google Play

Daily Puzzle

Three minutes a day: a Korean puzzle set

A daily set of Korean crossword, 6×6 number puzzle, and initial-consonant quiz — refreshed every day. Best for Korean speakers and learners.

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Google Play

Focus Book

High-contrast play for newborns and parents

High-contrast black-and-white patterns and a gentle music box, on one simple screen made for newborn eyes.

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Google PlayApp Store

Animal Peekaboo

Guess the animal from its 3D silhouette

A parent-and-child guessing game: study a dark 3D silhouette, make a guess together, then tap to reveal the colorful animal.

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Google PlayApp Store

3D Animal & Dinosaur Coloring

Color it in 2D, then watch it come alive in 3D

A kids coloring app where the colors chosen on a 2D animal or dinosaur appear on the same friend in 3D.

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The captain's promise

How Sofnet builds tools

  1. Clear requirements before you start

    Some browser tools need no account. Other services require sign-in or a creation order. Each service explains its current requirements.

  2. Know where your data is processed

    Local tools and server-based AI work differently. Each service explains what stays on your device, what is sent for processing, and how long files are kept.

  3. One tool for one moment

    Instead of one super-app with everything, we build a small tool for each concrete moment — a magic trick, a daily puzzle, a focus-play session with your baby.