AutoSub is a professional subtitle and video translation studio for iPhone and iPad. Six transcription modes, 50+ languages, AI-powered translation, and full offline privacy — all on-device. Built for content creators, educators, filmmakers, and video editors.
Transcription
• 6 transcription modes, all processed on-device
• Fast: quick speech-to-text, 10 languages
• Accurate: 3 model variants (Standard, Balanced, Max) supporting 50 languages with high-quality transcription
• Fusion: 2 model variants — English & European (25 languages, ultra-fast) and Multilingual (30+ languages including Chinese, Japanese, Korean, Arabic, and Hindi)
Translation
• Apple Translate: fully offline, 17 languages
• Google Translate: fully offline, 50+ languages
• AI Translate: context-aware cloud translation using advanced AI models like Gemini and GPT — handles slang, idioms, and natural phrasing
• AI Enhance: improve existing translations at lower cost without retranslating from scratch
• Switch between AI models in Settings
Subtitles & Editing
• View all subtitle lines in one clean place
• Edit both original transcript and translated text per segment
• Copy individual subtitle lines
• Subtitle sync adjustment (fine-tune timing from -5 to +5 seconds)
• Dual subtitle display (show original and translation together)
• Import existing SRT files
Video OCR
• Draw a rectangle on the video to select on-screen text
• Translate signs, captions, graphics, and any visual text instantly
Export
• SRT file export (original or translated)
• Video export with burned-in subtitles and captions, up to 4K at 24/30/60fps
• Customizable subtitle styling: font, size, weight, color, position, shadow, and background
Offline & Private
• All transcription and offline translation run entirely on-device
• Your video and audio never leave your iPhone or iPad
Pro Subscription
• Unlocks unlimited transcription, AI Translate, AI Enhance, Accurate and Fusion modes, offline language downloads, SRT exports, 4K video exports, and all advanced features
Payment charged to your Apple ID account
Auto-renews unless canceled 24 hours before renewal
Manage in App Store account settings
Privacy Policy https://basels.tech/privacy-policy-autosub-ai/
Terms of Use https://basels.tech/terms-of-use-autosub-ai/
