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チュートリアルには「ここ」と表示されているが実際は『KoKo』！
チュートリアルには「ここ」と表示されているが実際は『KoKo』！
About
This app helps users communicate visually and audibly in situations where speaking is difficult. It features a bright flashing screen, customizable messages, and an SOS beacon mode. It also includes an emergency contact display and quick launch options.
✓High-brightness flashing screen
✓Adjustable flash speed
✓Pre-registered custom messages
✓Emergency contact display
✓SOS beacon mode (Morse code)
✓Quick launch from lock screen
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What's New in KoKoFlash
2.1
July 14, 2026
Appleの新しい年齢制限項目に対応しました。 「作者のほかのアプリ」ページを充実させました。 そのほか、細かな改善を行いました。
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FAQ
What is KoKoFlash used for?
KoKoFlash is designed to help users communicate visually and audibly in situations where speaking is difficult. This includes scenarios like feeling unwell, experiencing panic or anxiety, or being in noisy environments.
Can KoKoFlash be customized?
Yes, KoKoFlash offers extensive customization. Users can adjust the flashing speed, set up pre-registered custom messages for various situations, and register emergency contact numbers.
Does KoKoFlash have an SOS feature?
Yes, KoKoFlash includes a Beacon Mode that uses the iPhone's LED flash to send the international SOS distress signal (・・・ーーー・・・) repeatedly in Morse code. This is useful for attracting attention when verbal communication is impossible.
How quickly can KoKoFlash be accessed in an emergency?
KoKoFlash prioritizes rapid activation. The app includes a tutorial for setting up quick launch from the iPhone's lock screen, making it accessible even for users less familiar with swipe and button operations.
What are the preset emergency numbers in KoKoFlash?
KoKoFlash includes presets for 110 (Police) and 119 (Fire/Ambulance) in Japan, as it is designed with domestic use in mind. However, users or those around them must initiate the actual calls.
Is KoKoFlash suitable for people with light sensitivity?
Yes, KoKoFlash includes a slower flashing mode designed to accommodate users who are sensitive to bright lights or have photosensitivity. The settings are designed for intuitive toggle operation.
What devices does KoKoFlash support?
KoKoFlash is currently supported on iPhones. It was last updated on June 10, 2026, with version 2.0.
Does KoKoFlash have ads?
No, KoKoFlash does not contain advertisements. It is a free app with optional in-app purchases.