FlexLex: Vocab & Flashcards

FlexLex is a vocabulary learning app built for focused, efficient learning. 8 study modes, spaced repetition, and full offline support. No account needed.

CREATE YOUR VOCABULARY LIBRARY

Add words manually, import them from Excel or text files, or scan a textbook page with the built-in OCR scanner. Building your word collection takes seconds.

8 STUDY MODES FOR EVERY LEARNING STYLE

- Flashcards: Swipe through cards, flip to reveal, mark what you know.

- Write Mode: See the word, type the translation from memory. Active recall.

- Spell Mode: Hear the pronunciation, spell it out letter by letter.

- Multiple Choice: Pick the right answer from four options. Quick and effective.

- Test Mode: Mixed question types in one session. Evaluate your current level.

- Match Game: Pair words with translations against the clock.

- Rush Game: Challenge yourself to answer before time runs out.

- Learn Mode: A guided session that teaches you new words step by step.

SPACED REPETITION THAT ADAPTS TO YOU

FlexLex uses the SM-2 algorithm to schedule reviews at the optimal moment — right before you would forget. Words you struggle with appear more often. Words you know transition into long-term memory. Every answer shapes your personal review schedule.

FULLY OFFLINE — YOUR WORDS STAY ON YOUR DEVICE

No account, no cloud, no sync. Your vocabulary never leaves your phone. The only data collected is what the ad network needs — nothing about what you study. Works on a plane, on a train, anywhere.

SMART ORGANIZATION

Create folders, subfolders, and word sets. Organize by language, topic, or difficulty. Nest them however your brain works best.

ARTICLE COLOR CODING

Learning German for example? Assign colors to der, die, das and see them highlighted across the entire app. Works with any language's grammar markers or articles.

TRANSLATION SUGGESTIONS

Type a word and get instant translation suggestions powered by on-device models. Supports dozens of languages — no internet required.

PROGRESS TRACKING

Daily stats, streak tracking, and word status breakdowns. Monitor how many words you've reviewed and what still needs work.

BACKUP & RESTORE

Export your entire library as a backup file. Share it, store it in the cloud, or transfer it to another device. Your data is always portable.

FREE, WITH ADS THAT STAY OUT OF YOUR WAY

FlexLex is free and supported by ads — but never during a study session. Your review flow is never interrupted.