Koichi Iwasaki

HUNDRED - Number Puzzle

App Free

• Version: 1.0.0
• Size: 35.56 MB
• Release date: 2026-10-31
• Min iOS: 15.0
• Bundle ID: com.kohchanstudio.hundred

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酒帖

App Free

• Version: 1.1.2
• Size: 77.13 MB
• Release date: 2026-09-30
• Min iOS: 16.6
• Bundle ID: com.kohchanstudio.sakecho

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Lingo Hunt

App Free

• Version: 1.0.0
• Size: 34.16 MB
• Release date: 2026-09-20
• Min iOS: 15.0
• Bundle ID: com.kohchanstudio.lingohunt

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Zen Rummy

App Free

• Version: 1.0.0
• Size: 112.88 MB
• Release date: 2026-02-19
• Min iOS: 13.0
• Bundle ID: com.KohchanStudio.ZenRummy

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Card Golf Classic Tour

App Free

• Version: 1.0.0
• Size: 106.81 MB
• Release date: 2026-02-18
• Min iOS: 13.0
• Bundle ID: com.KohchanStudio.CardGolfClassicTour

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Thirty-One

App Free

• Version: 1.0.1
• Size: 100.8 MB
• Release date: 2025-12-30
• Min iOS: 13.0
• Bundle ID: com.KohchanStudio.Thirtyone

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Balcony Lab

App Free

• Version: 1.0.1
• Size: 103.11 MB
• Release date: 2025-11-19
• Min iOS: 13.0
• Bundle ID: com.KohchanStudio.SakumotsuPocketFarm

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Fruit Packing & Puzzles

App Free

• Version: 1.0.1
• Size: 66.44 MB
• Release date: 2025-06-03
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.SakumotsuArrange

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SAKU PUYO

App Free

• Version: 1.0.2
• Size: 66.1 MB
• Release date: 2025-02-13
• Min iOS: 13.0
• Bundle ID: com.KohchanStudio.Sakupuyo

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Samurai Attacks

App Free

• Version: 1.0.1
• Size: 80.09 MB
• Release date: 2024-07-16
• Min iOS: 12.0
• Bundle ID: om.KohchanStudio.SamuraiAttack

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TEA TIME Solitaire

App Free

• Version: 1.0.0
• Size: 68.56 MB
• Release date: 2024-03-15
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.Solitaire

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Make English words.

App Free

• Version: 1.0.0
• Size: 124.31 MB
• Release date: 2023-12-13
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.MakeEnglishWords

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Samurai Runs

App Free

• Version: 1.0.1
• Size: 137.75 MB
• Release date: 2023-11-22
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.SamuraiRun

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My Wonderful Island

App Free

• Version: 1.1.2
• Size: 89.65 MB
• Release date: 2021-03-08
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.WonderfulIsland

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Samurai Mission

App Free

• Version: 1.0.2
• Size: 152.18 MB
• Release date: 2019-10-25
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.SamuraiMission

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CONCENTRATION(神経衰弱ゲーム)

App Free

• Version: 1.0.0
• Size: 144.84 MB
• Release date: 2019-03-09
• Min iOS: 9.0
• Bundle ID: com.KohchanStudio.Concentration

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Butanoshippo(Card game)

App Free

• Version: 1.0.7
• Size: 146.5 MB
• Release date: 2019-02-16
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.Butanoshippo

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Speed(Card game)

App Free

• Version: 1.0.1
• Size: 148.88 MB
• Release date: 2019-02-03
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.Speed

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Old Maid(Babanuki)

App Free

• Version: 1.1.1
• Size: 92.81 MB
• Release date: 2018-11-30
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.Babanuki

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SevenNarabe

App Free

• Version: 1.0.5
• Size: 136.28 MB
• Release date: 2018-10-18
• Min iOS: 12.0
• Bundle ID: com.KohchanStudio.SevenNarabe

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