Language
Products
Android apps on Google Play, games on Steam, and websites. Filter by type.
Rubik’s cube algorithms, 3D diagrams, and method guides in 13 languages.
World scriptures and sacred texts in original languages and translations.
Studio albums and tracks on Audiomack.
Reference tables and lookup hubs, in many languages.
Calculators with short explainers in English and Korean.
World-language notes, scripts, IPA, and sentence reading.
Natural science and core engineering handbook in Korean and English.
Typing practice in 21 languages — drills, games, and per-key stats. No install, no account.
Browser-only coding practice — playground, problems, and HTML preview. No remote code execution.
Korean wordchain and letter play in the browser.
A browser coin filter across multiple exchanges.
A hub of hundreds of light 2D minigames in the browser.
A read-only archive of field notes and essays by topic.
Realtime multiplayer Tetris — practice, AI, and room codes.
Steer your rocket, dodge traffic, grab items, and unlock cars and maps.
Set each app’s media volume separately—no more one master slider.
Learn Chinese with quizzes—vocab, Pinyin, and HSK-style exam prep in 13 languages.
Practice guitar chords and notes with short quizzes.
Unit quizzes, live exchange rates, custom units—from tiny to huge.
Helpful Bible study resources—places, maps, and timelines.
Time zones, birthstones, birth flowers, and other handy time tools.
Learn braille typing in many languages—from basic letters to advanced signs.
Quick privacy lock overlay so nearby people cannot easily see your screen.
Record, edit, and organize voice memos on your phone.
Real chemistry, not fantasy alchemy. Combine substances, fill your codex, take quizzes, hunt reactions, and play rhythm challenges.
