Vocabulex: Vocabulary Builder
Your AI Adaptive Vocab Cards
Free · In‑App Purchases
Ready to learn and remember better? Vocabulex is an AI-powered vocabulary builder with adaptive spaced repetition, designed to match how your memory works.
EXPLORE
Encounter an interesting word or phrase — in a show, a conversation, a book. AI explains it in plain language with examples at your level. Not a sterile dictionary entry — context you can actually learn from. Includes synonyms, phonetic transcription, transliteration, and word frequency ratings. Smart input validation catches typos and wrong-language entries, suggesting corrections so you always find what you need.
LEARN
Save a card and AI fills it with examples at your level — learning starts right away. Organize cards into decks by topic. Search, filter, and track each card's learning state and next review time.
REVIEW
Adaptive sessions that follow your memory. Every card gets its own schedule, updated after every review — not fixed intervals, real adaptation based on how well you actually know each item. Rate each card as Again, Hard, Good, or Easy, and the system adjusts accordingly. Every review brings a different example, a different context — building memory you can reach for in real conversation, not just on a flashcard.
ACTIVE RECALL
Go beyond passive flashcards. Type the translation before revealing the answer — training your brain to retrieve, not just recognize. Fuzzy matching tolerates minor spelling mistakes. Get it right and the app confirms instantly. Get it wrong and the card's rating adjusts automatically, scheduling it sooner. Toggle on or off anytime.
LISTEN & PRONOUNCE
Built-in text-to-speech at normal or adjustable slow speed. Fine-tune playback rates for careful listening.
LEARN YOUR WAY
Create multiple language profiles — with or without translation, at your level. Set daily reminders to build a habit of regular review.
ADVANCED SETTINGS
Take full control of the spaced repetition algorithm. Adjust desired retention and maximum review intervals. Apply settings globally or override them per card — so difficult words get reviewed more often while easy ones stay out of the way. Use synonyms as hints during review and control when they appear. Reset any card to its initial learning state for a fresh start.
LANGUAGES
English, Spanish, Ukrainian, Russian — with more coming.
FREE TO START
Core features are free. Upgrade to Pro for unlimited lookups, card creation, and storage — monthly or yearly.
Terms of Use: https://vocabulex.app/terms-app
Privacy Policy: https://vocabulex.app/privacy-app
We regularly improve Vocabulex to help you build vocabulary effectively. This update includes bug fixes and performance enhancements.
The developer, Dmitrii Alekseev, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dmitrii Alekseev
- Size
- 46.8 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Vocabulex Pro - Monthly $3.99
- Vocabulex Pro - Yearly $24.99
- Copyright
- © 2026 Dmitrii Alekseev