Lumen

Your gallery has thousands of photos. Finding every shot of one person shouldn't take an afternoon. Lumen indexes your photo library once, learns the faces in it, and then finds anyone instantly — a partner, a child, a friend, a whole group. It all happens on your phone. No account, no upload, no internet required. HOW IT WORKS — THREE ONE-TIME STEPS 1. Index your gallery. Lumen scans your photos once and detects every face. It runs in the background, so you can put your phone down and get on with your day. 2. Enroll a person. Pick any photo of someone and give them a name. That's all Lumen needs to know who to look for. 3. Find their photos. Lumen gathers every picture they appear in — including ones you'd forgotten you had. After that, searching is instant. WHAT YOU CAN DO • Browse by person — a clean, face-first view of everyone you've enrolled • Find people together — select two or more people and see only the photos where they all appear • Filter results — Single for solo shots, Group for photos with others, or review uncertain matches yourself • Tune the match sensitivity — dial accuracy up or down to suit your library • Export and share — save a person's photos to your gallery or share them straight from Lumen • Choose what gets scanned — your whole library, the most recent photos, or a date range PRIVATE BY DESIGN — NOT AS AN AFTERTHOUGHT Most face search runs in someone else's data centre. Lumen doesn't. • Face detection and recognition run entirely on your device, using AI models built into the app • Your photos, face thumbnails and face data never leave your phone • No accounts. No sign-up. No servers to breach. • No ads, no analytics, no tracking SDKs of any kind • Works in airplane mode • Delete your index or an enrolled person at any time — uninstalling removes everything Lumen requests photo access only so it can read your library, and you stay in control: grant access to all photos, or hand-pick just a few. Android lets you change your mind whenever you like. FREE TO START The free version indexes up to 500 photos — enough to see exactly how well Lumen works on your own library before spending anything. LUMEN PREMIUM — ONE PAYMENT, YOURS FOR LIFE No subscription. Ever. A single purchase unlocks: • Unlimited indexing across your entire photo library • Index photos up to a specific date • Scan a custom number of recent photos, beyond the standard presets • Skip folders — exclude albums that should never be scanned • Find photos of 3+ people together, removing the 2-person limit BUILT FOR ACCURACY Lumen uses proven on-device face recognition models, and it aligns every face before matching so results hold up across years of photos, changing hairstyles, glasses and lighting. When a match is borderline, Lumen tells you instead of guessing — you decide. Your memories are yours. Lumen helps you find them without asking you to hand them over.