LiveSub vs Notta

LiveSub turns your iPhone into a real-time subtitle and translation device for meetings, lectures, and conversations — powered entirely by Apple's on-device AI, with no internet required. Speak naturally. LiveSub listens, transcribes, and translates instantly using Apple's built-in Speech Recognition and Translation frameworks — all processed locally on your iPhone. Nothing is sent to any server. Your conversations stay completely private. LIVE TRANSLATION See the original speech and translation side by side as words are spoken. Supports Japanese, Korean, English, Chinese (Traditional & Simplified), French, German, Spanish, and more. FULL TRANSCRIPT Every session is automatically saved as a text file. Review, share, or export transcripts anytime from the History screen. IMPORT AUDIO FILES Already have a recording? Import any audio file to get a full transcript and translation without real-time capture. SESSION HISTORY Browse past sessions, select multiple transcripts, share or delete them — all in one place. COMPLETELY PRIVATE No account required. No subscription. No data collection. All speech recognition and translation run on your device using Apple's built-in frameworks. LANGUAGE SUPPORT • Chinese (Traditional) ↔ Japanese, Korean, English, and more • Japanese ↔ Chinese, English, Korean • English ↔ Chinese, Japanese, Korean, French, German, Spanish, and more • 20+ supported language pairs REQUIREMENTS • iPhone or iPad with iOS 26 or later • Translation language packs can be downloaded once in Settings → General → Language & Region → Translation Languages

Notta 是一个本地优先的 iOS 笔记、阅读与 AI 对话应用。你可以写 Markdown 笔记、导入电子书、在阅读时提问，并让回答带着书籍出处；也可以把引文或对话做成分享图。AI 使用你自己配置的服务地址、模型与 API Key；密钥保存在设备 Keychain。笔记、电子书、日记和对话默认都留在本机。 首次打开会有欢迎笔记与种子书《Notta 的小故事》，帮助你了解如何把零散想法留下来。Notta 日记可按天自动整理你记过、聊过、读过的事；长期了解也默认保存在这台手机上。首版不开放 iCloud / CloudKit 同步。 English: Notta is a local-first iOS app for notes, reading, AI chat, and a private daily diary. Capture Markdown notes, import ebooks, ask questions while reading with source-aware answers, and share quotes or chat as images. AI uses the provider URL, model, and API key you configure. Notes, ebooks, diary entries, and chats stay on your device by default. The first release does not expose iCloud sync.