# Lumi AI — Local Custom Private AI Chat > Private, on-device AI companion for personalized offline conversations. (iPhone/iPad app by Matt Krussow.) - Source: https://appshunter.io/ios/app/lumi-ai/id6746665068 (this page in markdown: same URL + `.md`) - Developer: [Matt Krussow](https://appshunter.io/developer/1816335194) - Category: Productivity, Entertainment - Price: Free - Rating: 5.00/5 from 2 App Store ratings - Age rating: 9+ - Requires: iOS 18.4 · 2.5 GB - Languages: English - Released: 2025-08-27 - Data updated: 2026-08-31 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/lumi-ai/id6746665068/reviews.md ## What is Lumi AI? Looking for a more personal AI companion you can actually keep with you? Lumi is a private, on-device AI companion built to work right from your pocket. Chat without relying on the cloud, shape Lumi’s personality to fit you, and enjoy conversations that stay on your device. With Lumi, you can: Chat with a personalized AI companion Use Lumi offline when Wi-Fi or service is unavailable Keep your conversations private and on-device Choose a personality or create your own custom one Talk with Lumi in a dedicated voice mode Share photos and documents for Lumi to understand Lumi now runs on Gemma 4, making it much more capable, more natural to talk to, and more useful for everyday conversation. Because Lumi runs locally, it needs serious power under the hood. Lumi is a large download and requires a device with 6GB or more of RAM. Supported devices include: iPhone 12 Pro or later iPhone 14 or later iPhone 17 or later unlocks the more powerful Ascended Lumi iPad and Apple Vision Pro are supported too This major update for Lumi makes a big step toward making it feel truly useful every day. More improvements are on the way as Lumi becomes more agentic, and I’d love to hear how it works for you. ~ Matt ## Key features - On-device AI companion - Offline chat functionality - Customizable AI personality - Voice mode conversations - Photo and document sharing - Runs on Gemma 4 ## Frequently asked questions about Lumi AI ### What devices support Lumi AI? Lumi AI supports iPhone 12 Pro or later, iPhone 14 or later, and iPhone 17 or later for the Ascended Lumi. iPads and Apple Vision Pro are also supported. It requires a device with 6GB or more of RAM. ### How often is Lumi AI updated? The latest version is 3.3, last updated on June 4, 2026. The developer indicates that more improvements are on the way as Lumi becomes more agentic. ### Is Lumi AI suitable for younger users? Lumi AI has an age rating of 9+. The app is designed for personal use and offers a private AI companion experience. ### Can I use Lumi AI without an internet connection? Yes, Lumi AI is designed to work offline. You can chat with it when Wi-Fi or service is unavailable, as all conversations stay on your device. ### What makes Lumi AI's personality customizable? You can choose from pre-set personalities or create your own custom one. This allows for a truly personalized AI companion experience tailored to your preferences. ### Does Lumi AI have ads? No, Lumi AI does not contain advertisements. The app is free and does not feature any in-app purchases or ads. ### What is the user sentiment for Lumi AI? Based on the available data, Lumi AI has a perfect 5.0-star rating from 2 reviews, indicating very positive user sentiment. ### How does Lumi AI use Gemma 4? Lumi AI now runs on Gemma 4, which makes it significantly more capable, natural to converse with, and useful for everyday interactions. This update enhances its overall performance and conversational abilities. ## Version history (last 5 releases) ### 3.3 — 2026-06-04 Improved beta tool use and memory. Lumi Link is the place to quickly see your permissions and connectivity settings. General bug fixes. Voice mode enhancements allow Lumi to properly refer to mph as miles per hour along with other edge cases. Lumi Drift stability and voice improved. ### 3.2 — 2026-05-20 Lumi is getting much more useful in everyday life. This update improves Voice Mode with richer, more natural voices and adds a new local tool system so Lumi can help with real tasks while keeping you in control. Lumi can now work with weather, maps, contacts, calls, text drafts, email drafts, music, Lumi Lists, calendar events, reminders, and local memory. Communication actions still use Apple’s native confirmation screens, so Lumi can prepare a message or email, but you decide what gets sent. While these tools are in beta, enjoy them and report any misses or bugs by Lumi please! Also included: smarter contact defaults, better local weather and forecast handling, Apple Maps place search and directions, and many reliability improvements across chat, memory, and tool use. -Improved Voice Mode with more natural voice playback -Added local tool support for weather, maps, contacts, reminders, and calendar help -Added native text and email draft support through Apple compose screens -Added contact defaults for resolving names like “Dad” or “Alex” -Improved WeatherKit forecast responses and practical weather summaries -Added Apple Maps place search and route opening -Improved local memory behavior and tool reliability -Math skills -Continued privacy-first design: Lumi prepares actions, you approve them ### 3.1 — 2026-04-28 Increased token allowance for 30+ minutes of continuous voice conversation. General enhancements and bug fixes for iPhone, iPad, and improved visionOS support. Upgraded Lumi with a much smarter Gemma 4 model New dedicated hands-free voice mode Photo and document understanding "Enable Thinking" for deeper, more thoughtful responses Experimental arcade game: Lumi Drift. Tap the Lumi icon to try it out (no network required) Big improvements to everyday usability ### 2.0 — 2025-12-05 A MUCH Smarter and Faster Lumi! Lumi has been upgraded to the next generation of Gemma, now running Gemma 3n! On higher end models, enhance Lumi even more, doubling it's parameters by downloading the Ascended model for a more capable and nuanced experience. Now after a brief initial warmup, Lumi stays active allowing for lightning fast responses! Lumi also remembers more with a larger context window for conversations, go back to past conversations and startup where you left off. ### 1.1 — 2025-09-01 Optimized Lumi for improved stability on older devices ## Apps similar to Lumi AI | App | Rating | Price | Category | | --- | --- | --- | --- | | [ReactorAI](https://appshunter.io/ios/app/reactorai/id6739567267) | — | Free | Productivity | | [Secret AI: Local AI Chat](https://appshunter.io/ios/app/secret-ai-local-ai-chat/id6744668980) | 4.4 (68) | Free | Productivity | | [CosmicChat by Mistyoz AI](https://appshunter.io/ios/app/cosmicchat-by-mistyoz-ai/id6751541291) | 5.0 (3) | Free | Productivity | | [PocketGPT: Private AI](https://appshunter.io/ios/app/pocketgpt-private-ai/id6479569299) | 4.4 (17) | Free | Productivity | | [Local Brain](https://appshunter.io/ios/app/local-brain/id6476066730) | 1.3 (6) | Free | Productivity | | [Eris.](https://appshunter.io/ios/app/eris/id6747496749) | 4.3 (6) | Free | Productivity | ## More apps by Matt Krussow - [Nanny Ledger](https://appshunter.io/ios/app/nanny-ledger/id6753775836) - [Cosmic Sleep](https://appshunter.io/ios/app/cosmic-sleep/id6756525725) - [Little Bubbles](https://appshunter.io/ios/app/little-bubbles/id6762238121) All apps by Matt Krussow: https://appshunter.io/developer/1816335194 ## Related topics [loomi ai](https://appshunter.io/ios/topics/loomi-ai) · [lumi ai](https://appshunter.io/ios/topics/lumi-ai) · [lumix ai](https://appshunter.io/ios/topics/lumix-ai) · [ilands ai](https://appshunter.io/ios/topics/ilands-ai) · [lumify ai](https://appshunter.io/ios/topics/lumify-ai) · [lynette hazeldine](https://appshunter.io/ios/topics/lynette-hazeldine) · [luminary ai](https://appshunter.io/ios/topics/luminary-ai) · [lumo ai](https://appshunter.io/ios/topics/lumo-ai) · [harvey ai](https://appshunter.io/ios/topics/harvey-ai) · [luminary ai companion](https://appshunter.io/ios/topics/luminary-ai-companion) · [retell ai](https://appshunter.io/ios/topics/retell-ai) · [napkin ai](https://appshunter.io/ios/topics/napkin-ai) · [luminar ai](https://appshunter.io/ios/topics/luminar-ai) · [winston ai](https://appshunter.io/ios/topics/winston-ai) · [gemmy ai](https://appshunter.io/ios/topics/gemmy-ai) · [mit ai companion](https://appshunter.io/ios/topics/mit-ai-companion) · [lumy ai productivity app](https://appshunter.io/ios/topics/lumy-ai-productivity-app) · [lima ai](https://appshunter.io/ios/topics/lima-ai) · [genmo ai](https://appshunter.io/ios/topics/genmo-ai) · [ivan luhavoi](https://appshunter.io/ios/topics/ivan-luhavoi) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*