Koe AAC

On-device communication aid

Free · Designed for iPad. Not verified for macOS.

Recordings stay on your iPhone. Speak naturally in any setting — hospital, home, or on a call. Your voice, again. Koe is an accessibility communication aid for iPhone — a tap-driven app that helps people who find speaking difficult express themselves with their own voice. Recordings, inputs, and AI-generated phrase suggestions all stay on your iPhone. No network. No cloud. UI is in Japanese. Spoken output can be switched among Japanese, English, Korean, and Traditional Chinese. ■ Key features ▶ Sentence completion from a few hiragana letters Type a fragment and get five natural Japanese sentences instantly. ▶ Context-aware reply suggestions Transcribes the other speaker on-device and proposes situation-appropriate replies. ▶ 200+ template phrases across 5 scenes Hospital, Family, Phone, Emergency, Daily — reordered by AI for context. ▶ Personal Voice playback Integrates with iOS Personal Voice so the app speaks in your own voice. Voice data stays on device. ▶ Full accessibility support VoiceOver, Switch Control, Eye Tracking (iPadOS), Dynamic Type. Large tap targets. ■ Privacy by design The app holds no network entitlement. Speech recognition uses Apple's on-device SFSpeechRecognizer. Phrase generation runs on Apple Foundation Model or MLX Gemma 4 locally. Personal Voice never leaves the device. Recordings and inputs are never transmitted. ■ When Koe helps - When speaking requires extra time or effort - When you want to express yourself clearly in noisy environments - During phone calls or face-to-face conversations - As a tool for care partners and support professionals ■ System iOS 18 or later. Recommended: iPhone 15 Pro / 17 Pro or later (Apple Intelligence-capable). Microphone and Speech Recognition access required. Personal Voice optional. ■ Important notice This app is not a medical device. It is not intended to diagnose, treat, cure, or prevent any disease or condition. Koe is an accessibility communication aid. ■ Developer Daisuke Majima Email: samuraibrothersmail@gmail.com Web: https://john-rocky.github.io/koe-app/

Ratings & Reviews

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v1.0.2 - Live Activity (lock screen / Dynamic Island) is now completely OFF. Any leftover activity from previous versions is automatically cleaned up on launch. - iPad support (sidebar layout, large cards for Eye Tracking) - Audio disabled in UI test mode (for internal snapshot stability) - Minor bug fixes Feedback: samuraibrothersmail@gmail.com

Version 1.0.2

The developer, Daisuke Majima, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Daisuke Majima
    Size
    • 4.4 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    • Japanese
    Age Rating
    4+
    Copyright
    • © DAISUKE MAJIMA
  • Developer Website
  • Privacy Policy

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