Captionify vs SafeThink

Captionify turns speech into text in real time, entirely on your device. Transcribe meetings, lectures, and conversations. Translate across languages instantly. No subscription. No account. Nothing sent to the cloud. REAL-TIME TRANSCRIPTION Using on-device AI, Captionify converts spoken words to text the moment they're said — no internet connection required. Ideal for lectures, meetings, interviews, and noisy environments where you can't afford to miss a word. LIVE TRANSLATION Understand any language as it's spoken. Captionify translates speech in real time so you can follow along in any conversation, anywhere in the world. FACE-TO-FACE CONVERSATION MODE Talking with someone who speaks a different language? Face-to-Face mode lets two people hold a natural bilingual conversation on a single device — one speaks, the other reads, then you swap. No interpreter. No awkward pauses. AGENT MODE Talk to an on-device AI assistant that can use tools, connect to your own MCP servers, and remember saved chats — all without sending anything to the cloud. CUSTOM PIPELINE (BETA) Mix and match independent transcription, translation, and voice engines — on-device or your own custom endpoint — to build a live pipeline that's entirely your own. AI SUMMARIES Powered by Apple Intelligence, Captionify distills long transcripts into the key points that matter. Everything runs on-device — your words never leave your phone. APPLE WATCH SUPPORT See live captions on your wrist and control recording remotely. Keep your phone in your pocket while staying connected to every word. SAVE & SEARCH YOUR TRANSCRIPTS Every session can be saved and searched later. Build a personal library of transcripts — no cloud storage, no account, no limits. PRIVACY BY DESIGN Captionify uses Apple's on-device AI for all processing. Your voice and your transcripts stay on your device always. 100% FREE No subscription. No paywall. No account required. Every feature, available from the moment you open the app.

SafeThink is the AI assistant that never sends your data anywhere. It works without the internet. It runs the Qwen 3.5 4B large language model entirely on your iPhone - no cloud APIs, no accounts, no subscriptions. Your conversations, documents, and photos stay on your device, always. POWERFUL ON-DEVICE AI • Run a 4-billion parameter AI model directly on your iPhone • Streaming responses with real-time tokens-per-second display • 8K context window for longer, more coherent conversations • No internet required for AI chat - works completely offline DOCUMENT ANALYSIS • Import PDF, TXT, or CSV files and ask questions about them • The AI reads your document content and provides summaries, answers, and insights • All document processing happens on-device - your files are never uploaded IMAGE UNDERSTANDING • Attach photos and ask the AI about them • On-device Vision AI extracts text (OCR), identifies objects, detects faces, and reads barcodes/QR codes • The AI uses this analysis to describe and answer questions about your images WEB SEARCH • Optional DuckDuckGo web search for up-to-date information • Search results are processed by your on-device AI for intelligent answers • Every network request is logged and visible in the Privacy Dashboard PRIVACY BY DESIGN • Zero data collection - no analytics, no tracking, no crash reporting • No account required - just download and start chatting • Face ID / Touch ID lock to protect your conversations • Privacy Dashboard shows every network request the app has ever made • Network access is only used for downloading the AI model and optional web search SMART FEATURES • Persistent memory - the AI remembers important facts across conversations • Voice input with on-device speech recognition • Markdown rendering with code syntax highlighting • Pin, archive, and search your conversation history • Export chats as JSON, Markdown, TXT, or PDF • Customizable system prompt, temperature, and top-p settings REQUIREMENTS • iPhone 12 Pro or later (6 GB RAM minimum) • iOS 17 or later • ~3 GB free storage for the AI model download • Internet required only for initial model download SafeThink proves that powerful AI doesn’t have to come at the cost of your privacy. Everything runs on Apple Silicon - your data never leaves your hands.