Use the app in English, Afrikaans, or Portuguese while you train in a different language. Lumen keeps your levels, SRS cards, history, and analytics separate for every training language.
Free to start · iOS and Android · English, Afrikaans, Portuguese
Not automatically — and that is why Lumen checks. Reading faster usually costs some understanding, and RSVP removes re-reading, which can hurt on complex text. Every session ends with a short comprehension check, so you can see your speed and understanding together and adjust the pace.
It works for anything your brain reads in sequence — papers, specs, contracts, novels, news. For very dense math or code, drop the speed; the app remembers per-book settings. The training mode also builds a focus muscle that carries into normal reading.
It depends on you, the material, and how often you train. Research (Rayner et al., 2016) is cautious: doubling or tripling reading speed while keeping normal comprehension is unlikely. Lumen sets your baseline in session one, then helps you practise and checks comprehension every session so you can see your own progress.
Free to start with no card. The premium tier unlocks unlimited books, AI insights, training paths, and offline downloads. You can cancel any time from the App Store.
Yes. You can keep the app interface in English, Afrikaans, or Portuguese while training in another language. Lumen keeps progress, levels, history, SRS cards, reminders, and analytics separate per training language.
iOS is live on the App Store today. Android is in active development. The web preview is enough to feel how Lumen reads; the full training, library, and offline experience live in the native app.
Cancel any time from the App Store — no hoops, no emails, no phone calls. Your reading data stays on your device; we don't lock it behind a subscription. Try the free tier, complete a few sessions, and decide based on real experience.
No — Lumen builds a new skill on top of your existing reading. Think of it like learning to type: you can still read normally, but now you have a faster tool when you need it. The training is separate from your normal reading; you choose when to switch modes.
RSVP has been studied for decades in cognitive psychology and eye-tracking research. The science isn't new — what's new is packaging it in an app that adapts to your pace, tracks progress, and makes it feel less like homework and more like a game. Read the research on our /science page.