Lightwriter+ vs Koe AAC

We want to help people with hearing disability to communicate to the world. Let your friend or the loved one talk into your device and you will instantly see what they are saying to you. The app is simple but does the job: 1) Click the “Dictate” button and start dictating. 2) Click the “Clear” button when you are ready for the next conversation.

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/