Mossglen

Learn a language by reading the web. Tap a word to translate and save it, read aloud, spaced-repetition review. 8 languages, free. The agent picks its own tools: marking new words, clearing the page, answering with your reading history in hand, and returning a word right before you forget it.

How it works 1. Any page, new words already marked — Nothing to click. Words you already know stay unmarked. 2. One click into the reading view — Ads and sidebars step aside; read aloud sentence by sentence. 3. Tap a word, it lands in your list — Meaning, pronunciation, and how it works in this exact sentence. 4. Answers that carry your history — It pulls up last week’s article: thrive is the word you saved there. 5. Back three days later, on its own — Returned inside the sentence where you first met it.

Core features

• Autonomous tool calls — The agent orchestrates 16 tools on its own: read your learner profile, search your words, recommend articles, save to your list.
• Long-term memory — Reading history, weak sentence patterns, and the due date of every word persist across sessions.
• The AI gauges your level — Your level is inferred from how you read. No test to sit.
• Spaced repetition, scheduled for you — Review times come from your forgetting curve, and each word returns in its original context.
• Bilingual YouTube subtitles — Subtitles highlight word by word; click any line to jump back.
• 39 lifelike voices — Sentence-by-sentence narration, highlighting in step with the audio.
• Sentence and full-text side by side — Select any sentence to see the translation in place — no new page.
• New words marked on any page — Marked to match your current level; words you know stay clean.

Pricing Free

• Unlimited reading and word lookup
• Word highlighting, sentence translation
• 500 words in your list
• 15 AI credits a week — translation, Pip, and word notes all draw from it
• Bilingual YouTube subtitles