Kototabi ことたび
Japanese · JLPT N5–N2
Learn 3,400+ Japanese words across 46 real-life scenes — flashcards, listening quizzes and spaced review.
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Vocabulary by real-life scene, with audio, quizzes and spaced review.
Mando
Mandarin · HSK
Build HSK Mandarin vocabulary scene by scene with flashcards, listening and fill-in-the-blank quizzes.
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Wordwing
English · CEFR
Learn English vocabulary by scene, graded by CEFR level — flashcards, listening and fill-in-the-blank quizzes.
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LingoVoya
French · CEFR
Learn French vocabulary by real-life scene, graded by CEFR level — flashcards, listening and fill-in-the-blank quizzes.
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Amigo
Spanish · CEFR
Build Spanish vocabulary scene by scene, graded by CEFR level — flashcards, listening and fill-in-the-blank quizzes.
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Bossa
Portuguese · CEFR
Learn Brazilian Portuguese vocabulary by scene, graded by CEFR level — flashcards, listening and fill-in-the-blank quizzes.
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iOS coming soon
Ciaobello
Italian · CEFR
Learn Italian vocabulary by real-life scene, graded by CEFR level — flashcards, listening and fill-in-the-blank quizzes.
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iOS coming soon
Games
Small games with real depth.
Snake Angel
Arcade · Snake Roguelite
Classic snake with angel companions — a 500-portrait gallery, daily angels, bonus stages and three stars to chase on every run.
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Fair Deal
Solitaire · Klondike, FreeCell, Spider
Three patience games with a solver built in: every Klondike deal is verified solvable with the face-down cards visible, plus FreeCell deal numbers and Spider.
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Cube Blast
Block Puzzle · 300 levels
An 8×8 block puzzle where the whole piece stream is fixed before you place anything — the seed is checkable, so two runs of the same seed compare fairly.
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Dungeon Sweep
Cute · Minesweeper RPG
One board, one life: numbers show monster strength, HP is a resource, exactly 0 is safe. Level up and slay the dragon at the center.
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iOS coming soon
2048 Abyss
Roguelite · Merge Puzzle
A deep-sea roguelite merge puzzle — merge glowing sea creatures, unlock skills and talents, dive the abyss.
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iOS coming soon
Fish Cannon
Deep Sea · Merge Shooter
Aim, fire and merge sea creatures into bigger ones — a deep-sea merge shooter with a collectible fish encyclopedia.
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iOS coming soon
Connect Four
Strategy · Backed by a solver
Four in a row with a real solver behind it: layered hints that never spoil the answer, a post-game review that finds the turning point, and 16 auto-generated lessons.
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GTO decisions from verified math — no made-up numbers.
Preflop Camp
Texas Hold'em · Preflop GTO
Free preflop GTO trainer: opening, blind defense, 3-bet/4-bet, plus solved push/fold ranges.
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Postflop Coach
Texas Hold'em · Postflop
Train heads-up postflop decisions: 30 lessons and 699 verified drills covering pot odds, MDF and c-betting.
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For divers and ocean lovers.
About
Every app here is free: no account, no paywall, no tracking beyond the basics. The numbers behind them — solved ranges, verified drills, graded vocabulary — are computed and checked, not estimated.