Lesefluss
Speed reading, reinvented
Read faster.
Read anywhere.
Lesefluss is a speed-reading app for phone, web, and a pocket-sized ESP32 device. It also has a normal reader and a built-in library of free, beautifully typeset classics.
Covers by Standard Ebooks and Project Gutenberg
77k+
Free classics in the library
1.4k+
Hand-typeset Standard Ebooks
1000 WPM
Top reading speed
Free
No account, no subscription
The App
Read on your phone or in the browser
Import DRM-free EPUB or TXT books, or pick one from the built-in Explore page (Project Gutenberg and Standard Ebooks). Read with the built-in reader, or switch to RSVP mode for speed reading.
Chapter 1 · The Old Man
Features
Library & import
Import EPUB or TXT. Chapters and metadata detected automatically.
RSVP reading
Words flash at 100–1000 WPM with optimal letter alignment.
Built-in reader
Dark, sepia, and light themes. Adjustable font, spacing, and margins.
Dictionary & highlights
Tap any word to look it up. Highlight and search passages.
Tunable speed
Fine-tune WPM, punctuation pauses, acceleration, and focal position.
ESP32 sync
Automatic Bluetooth pairing. Your book, position and settings stay in sync both ways.
Rapid Serial Visual Presentation
Read faster
One word at a time.
Flash words one at a time with optimal letter alignment. Your eyes stop jumping, your pace stays steady, and you read 2–4× faster without losing comprehension.
Hardware
Leave the phone
behind
Pocket-sized ESP32 reader. AMOLED or TFT, single button, weeks of battery. ~€25 in parts.
Open source
No subscription needed.
The app is free. Read, import books, and sync your device — no account required. Optional cloud sync available.