Coming to TestFlight · Summer 2026

Your language Kindle.

Read real books in the language you're learning. Words you know stay in the original language. Words you don't get translated inline. Knowledge follows you across every book you ever read.

Joseph öffnete die Tür und betrat das Zimmer. Auf dem Schreibtisch lag ein Brief, der ihn schon den ganzen Tag beunruhigt hatte.

A sample page in Logia. Each word is rendered based on how well the app thinks you know it — from plain text for known words to italic translations for new ones.

How it works

Logia tracks every word you've seen, tapped, and marked. Each word has a confidence score that nudges up when you turn a page past it without checking, and down when you tap to peek. The page renders four ways depending on what you know.

KatzeKnown — plain text
BriefAlmost known — review prompt
windowStill learning
deskNot yet known

Knowledge persists across books

Words you mastered in your first book come pre-known in your second. A short calibration quiz figures out your level in about 20 questions, then you start reading. Logia ships with curated public-domain books from Project Gutenberg — currently German, with more languages on the way.

What's inside

German ↔ English (more language pairs coming)
Curated library of public-domain books from Project Gutenberg
Currently featured: Der rote Merkur (Auguste Groner, 1910 — a classic Austrian detective novel)
Self-paced calibration quiz, retake anytime
Tap any word for translation, CEFR level, and a one-tap "I know this" marker

Privacy

Everything stays on your device. Your vocabulary, your reading progress, your book history — none of it leaves your phone. The full privacy policy covers the anonymous usage analytics Logia uses to understand which features people use.

Get on the beta list

Logia is rolling out to a small group of early testers via TestFlight. Want in? Email ekaterina.gasparian@gmail.com with the device you'd test on.