XDM AI vs Lumen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
XDM AI
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XDM AI Smart Browser – Intelligent, Secure & Family-Friendly Browsing Experience the next generation of web browsing with XDM AI Smart Browser, a powerful and secure browser enhanced with advanced AI tools for both adults and children. XDM AI combines fast, private browsing with intelligent assistance—helping you learn, create, plan, and explore the web safely and efficiently. Whether you're boosting productivity, researching ideas, or creating a protected browsing environment for your kids, XDM AI Smart Browser is built for every age. Why XDM AI Smart Browser? Smart Browser with AI at Its Core Browse the web while accessing powerful AI features without switching apps. Get answers, summaries, ideas, and structured plans instantly. Privacy & Security First Your data matters. XDM AI is designed with privacy-focused browsing, safety controls, and secure access features. Dual-Mode Experience Easily switch between Normal Mode and Child Mode for age-appropriate browsing and AI interaction. Modern & Intuitive Design A clean, beautiful interface designed for speed, simplicity, and comfort. Browser Features Fast & Secure Web Browser Passcode Lock Screen to protect browser access Built-in Ad Blocker for a cleaner, faster web experience Download Manager to manage files easily Private Browsing Mode for enhanced privacy Child-Safe Browsing Controls Normal Mode – Browse Smarter, Achieve More Enhance your daily browsing with advanced AI tools designed to boost productivity and creativity: AI Chat Assistant Ask questions, brainstorm ideas, summarize web pages, and explore complex topics instantly. Roadmap Generator Create structured plans for projects, careers, learning goals, and personal growth. Mind Map Visualizer Turn ideas and research into clear, visual mind maps. IQ Tester Test and track your cognitive skills with AI-powered challenges. Book & Article Summarizer Instantly get concise summaries from web pages, PDFs, and long texts. Project Management Organize AI conversations, ideas, and research in one place. Child Mode – Safe Browsing, Learning & Creativity (Ages 10+) A secure, moderated environment designed to help kids explore the web responsibly while learning and having fun: Kid-Friendly AI Chatbot Safe, educational conversations tailored for young minds. Story Creator Helps children write creative stories and develop imagination. Roadmap Generator (Kids) Simple plans for school projects, routines, or activities. IQ Games & Puzzles Fun challenges that improve problem-solving skills. Book Summarizer (Kids) Easy-to-understand summaries to support reading comprehension. Protected Browsing with Passcode Access One Browser. Unlimited Possibilities. Browse smarter, stay secure, and unlock AI-powered tools for the entire family with XDM AI Smart Browser. Download now and redefine how you browse the web with AI. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Lumen
This app acts as a browser that remembers what you read, building a personal knowledge base from engaged pages. It allows you to ask questions in plain English about your reading history, with answers generated by an on-device AI. All your data remains private and offline.
- On-device AI knowledge base
- Plain English questioning
- Automatic content organization
- Private and offline browsing
- Tracker blocking
- Source citation for answers
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: Lumen at none against XDM AI's 1. Lumen also leads on update cadence (every 2 weeks vs every 5 weeks). XDM AI's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. XDM AI sells 1 in-app purchase, starting at $5.99 per month. Lumen asks for nothing beyond the download.
XDM AI ships an update every 5 weeks, Lumen every 2 weeks. The most recent releases landed on September 11, 2026 and June 28, 2026 respectively.
| Parameter | XDM AI | Lumen |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 72 MB | 28 MB |
| Age rating | 17+ | 17+ |
| Developer | Yassine Elbouazzi | Daniel Kosukhin |
In-app purchases
XDM AI
- Monthly Plan$5.991 Month
Lumen
No in-app purchases





