Lumen vs Jot Transcribe

Lumen is a browser with a memory. Most browsers forget the second you close a tab. Lumen does not. As you read, it quietly builds a personal knowledge base from the pages you actually engage with, and then lets you ask questions about any of it in plain English, answered by an AI model that runs entirely on your device. Nothing you read, nothing you ask, and nothing Lumen learns about you ever leaves your phone. WHAT IT DOES Lumen reads along with you. It distinguishes between pages you genuinely read and pages you opened and swiped away, and it extracts the meaningful content from the ones that stuck. That content gets summarized, embedded, and organized into a searchable knowledge base, all on-device. Later, when you want to find something, you do not have to dig through history or remember which tab it was in. You just ask: "What did I read about sourdough starters last week?" "Summarize that article about the new M-series chips." "What were the main arguments in that piece I read on Tuesday?" Every answer cites the pages it came from, so you can jump straight back to the source. AUTO-ORGANIZED Your reading sorts itself into a clean hierarchy: Topics, Websites, and Pages. Each level carries its own AI-generated summary, so you can scan what you have been learning at a glance. No tagging, no folders to maintain. Lumen handles it in the background. PRIVATE BY DEFAULT Lumen has no server. There is quite literally nothing to send. On-device LLM: a quantized Llama 3.2 model runs locally through Apple's MLX framework. Local SQLite storage: your reading history, summaries, and embeddings never leave the device. Built-in privacy: tracker blocking, third-party cookie blocking, and fingerprint resistance. Secure: HTTPS-only by default, with mixed-content blocking. No strings attached: no accounts, no sync, no telemetry, no ads. The AI weights download once on first launch (~700 MB). After that, everything works fully offline: browsing, reading, asking, answering. BUILT FOR iOS Lumen is written from scratch in Swift and SwiftUI, designed specifically for iPhone and iPad. It uses Apple's own frameworks wherever it can: NLEmbedding for semantic search, WKWebView for browsing, SQLite with FTS5 for full-text queries, and MLX Swift for on-device inference. Zero third-party trackers. Zero external services. WHO IT'S FOR While most browsers treat the web as a feed to scroll past, Lumen treats it as a library worth keeping. If you read a lot online and constantly think "I know I saw something about this recently but I cannot find it again," Lumen is for you. Researchers, students, writers, developers, and lifelong learners. You do not need to change how you browse. Browse normally, and Lumen takes care of the rest. REQUIREMENTS iOS 18 or later. iPhone with Apple Silicon recommended for the fastest on-device AI performance.

A dictation keyboard for iPhone. Switch to Jot from any app — Messages, Mail, Slack — tap Dictate, and your voice goes into the text field you're in. No account. No cloud. Nothing leaves your iPhone. Speak Instead of Typing, in Any App You're in Messages, Mail, Slack, your browser — anywhere you'd normally type. Tap the globe key on your iPhone keyboard to switch to Jot, tap Dictate, and speak. Your voice goes straight into the text field you're already in. Keep Going When Life Interrupts Your phone rings mid-sentence. Someone hands you something. You jump into Calendar to check a date. Come back, and Jot's microphone is still warm — up to five minutes, ready to pick up where you left off. What you'd already said is saved as you said it. Even if everything drops, the part you'd already dictated is safe and waiting in the text field. Polish What You Said Into What You Meant You dictated something long and meandering. Open it in Jot and tap a built-in prompt: • Articulate — cleans up the prose • Action Items — pulls out the tasks • Email — formats it for sending Or write your own prompt — with your voice. "Turn this into bullet points." "Translate to French." "Make it sound more formal." Save it once, run it on any transcript with a tap. Ask Across Everything You’ve Said Every dictation becomes searchable by meaning, not just keywords. Ask Jot a real question — "What did I decide about the launch?" — and get a clear, written answer drawn from your own transcripts, with the exact notes it used cited as tappable sources. Ask in plain language, even by date — "what did I say last Tuesday?" Or just describe the note you're after — "the standup about channel config" — and Jot finds it for you. Answered on device with Apple Intelligence; your notes never leave your phone. What’s Inside • System-wide custom keyboard — works in any text field on iPhone • Ask Jot — natural-language questions and search across your transcripts, answered on device with Apple Intelligence • Recents strip — last 10 dictations one tap away to re-insert • Five-minute warm microphone across app switches and calls • On-device transcription using Apple's speech models, plus optional Parakeet 600M • On-device AI rewrite (optional 2.5 GB download) • Custom rewrite prompts you write once and reuse • Vocabulary list for names and technical terms • Light and dark mode — Jot follows your iPhone's appearance automatically • Action Button support and a "Transcribe Audio with Jot" Shortcuts action Your Data Transcription runs on device. Audio never leaves your iPhone. AI rewrites and Ask Jot run on device too. No account. No sign-in. No cloud sync. No analytics. No third-party SDKs. Transcripts live in the app, on your phone, until you delete them. Requirements iOS 26 or later. iPhone with A14 chip or newer. Optional AI rewrite: iPhone 15 Pro and later, 2.5 GB download. Ask Jot answers use Apple Intelligence (Apple Intelligence–capable iPhone required). English at launch. More languages to follow. Free to download. No subscription. No ads. No upsell.