About Voccle
Learn smarter. Remember longer.
What is Voccle?
Voccle is a free, AI-powered vocabulary learning app that turns any text into smart flashcards. Paste an article, a book excerpt, or any passage in a foreign language — Voccle instantly extracts the key words, generates bilingual flashcards, and schedules your reviews using the FSRS spaced repetition algorithm so you actually remember what you study.
The Name
"Voccle" is a blend of Vocabulary and Cycle. The name reflects our core philosophy: vocabulary isn't learned in one pass — it's reinforced through repeated cycles of review, spaced out over time.
Our Mission
Language learning should be effortless and enjoyable. We built Voccle to eliminate the most tedious part — creating study materials — so you can spend your time actually learning. Anyone learning English, Korean, Japanese, Spanish, French, German, Chinese, or Portuguese can get started in seconds, for free.
Core Features
- ✦AI Word Extraction — Paste any text and let AI pick the most important vocabulary for you.
- ✦Smart Flashcards — AI-generated definitions, example sentences, and native-language translations.
- ✦Spaced Repetition — FSRS algorithm schedules reviews at the perfect moment to maximize retention.
- ✦8 Languages — Korean, English, Japanese, Spanish, French, German, Chinese, and Portuguese.
- ✦Offline-ready PWA — Install on your phone and study anywhere, even without internet.
Activity-based proof
Even at an early stage, Voccle avoids vanity metrics like tiny user counts on marketing pages. Instead, it highlights real learning activity such as cards created, study sessions completed, and public decks shared.
The Science Behind Spaced Repetition
In the 19th century, German psychologist Hermann Ebbinghaus quantified how quickly human memory fades. Without review, roughly 70% of new information is forgotten within 24 hours, and nearly 90% within a week. This is the forgetting curve. Spaced repetition fights this curve by reviewing information at precisely the moment before you would forget it.
- ▸The Forgetting Curve — Memory decays exponentially over time. But each well-timed review dramatically slows the rate of forgetting.
- ▸FSRS Algorithm — Voccle uses FSRS, a modern ML-based algorithm that outperforms Anki SM-2 by 15-20% in retention rates.
- ▸Active Recall — Flashcards force your brain to actively retrieve information. The act of retrieval itself strengthens the memory trace.
- ▸Personalized Intervals — FSRS tracks stability and difficulty of each card individually. Easy cards get longer intervals; hard ones repeat more often.
Built on these principles, Voccle provides a scientifically optimized environment for building lasting vocabulary.
About the Developer
Voccle is built and maintained by DevSonny, an indie developer passionate about language learning and making great tools accessible to everyone.
The product is shaped around a simple frustration: vocabulary study should not start with setup work. Voccle is being built to turn one pasted paragraph into a complete learning loop as quickly as possible.
For business inquiries, partnerships, or feedback, reach out at: Send Emailhello@voccle.com