Readlex: Read & Learn

One-time purchase. No subscription, no account, no limits. Translate words, build vocabulary and read in any language — yours forever.

Read books. Learn a language. Naturally.

Readlex combines a powerful ebook reader with language learning tools. Long-press any unfamiliar word to get an instant translation, hear it pronounced, and save it to your personal vocabulary — all without leaving the page.

No sign-up. No account required. Your books, vocabulary, highlights and bookmarks sync automatically across all your iPhone and iPad devices via iCloud.

HOW IT WORKS

You read → find an unknown word → translate with one tap → save it with context → review with flashcards. In a few weeks, the words become yours.

READER

• EPUB and FB2 formats • Three reading modes: vertical scroll, horizontal swipe, page curl • Adjustable font size and text justification • Auto-scroll for hands-free reading with customisable speed • Reading position synced automatically • and much more

TRANSLATION & PRONUNCIATION

• Translate any word with a long press • Automatic source language detection • Translate and listen to the full context sentence • Switch source language directly in the translation card • Set your preferred target language in app settings

HIGHLIGHTS

• Highlight passages in five colours • Navigate between highlights without leaving the reader • View all highlights filtered by colour or chapter

PERSONAL VOCABULARY

• Words saved with translation and the original sentence • Listen to word and full phrase pronunciation • Filter by language or by book • Tap any word to jump back to where you found it • Progress tracking: New · Learning · Learned

SPACED REPETITION FLASHCARDS

• Smart algorithm — reviews scheduled at the right time • Cards built from words you actually saved while reading • Badge shows how many words are due for review today

STATISTICS

• Reading progress per book • Vocabulary growth by day, book, and language • Learning progress visualisation

NO ACCOUNT — EVERYWHERE

No registration. No server. Everything stored locally and synced via iCloud: • Your book library • Personal vocabulary • Highlights and bookmarks • Reading progress

Switch from iPhone to iPad — pick up exactly where you left off.

WHY READLEX?

One-time purchase — no subscription. Pay once, use forever. Most language apps teach words in isolation — and require an account to get started. Readlex teaches you words where they matter: in the context of real books. Everything is yours — your words, highlights, and progress stay on your devices, not on someone else's server.

Read more. Learn naturally. Remember longer.