RidgeRelay vs LiveSub

RidgeRelay lets you control six relay outputs from your iPhone. Customize relay names, icons, and colors while viewing live hardware-reported status over Bluetooth.

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