Vocabuo

Vocabuo is a vocabulary-focused language learning app for learners (A1 to C1) studying English, Spanish, French, Italian, German, or Swedish on mobile and web.

Key capabilities include:

• Spaced repetition (SRS) flashcards with multiple card types, including sentences, dialogs, audio, and definitions, plus practice modes like typing, speaking, or tap-to-reveal
• Learn from real-world content by extracting words from YouTube subtitles, web pages (website reader), and eBooks/texts, then turning them into review cards
• Ready-made word lists for proficiency and exam prep (A1, A2, B1, B2, C1), including frequency-based lists and the ability to skip words already known
• AI tutor and word help with AI explanations, built-in dictionaries, Linguee citations, and support for grammar cards and detailed progress statistics

Pricing: Freemium, free basic access with optional premium subscriptions (weekly $1.99, monthly $7.99 to $9.99, yearly $44.99) and lifetime options ($59.99 to $149.99 depending on region).

What makes it notable is its focus on SRS-driven vocabulary acquisition from personal content (video, web, and eBooks) paired with AI-assisted explanations and structured word lists for CEFR-style progression, rather than lesson-based courses.