About Lexiora
Lexiora is built on two mechanisms that vocabulary tools almost always get wrong separately: context and spacing. Most lookup tools give you a definition and let you forget it. Most flashcard apps give you spaced repetition but strip away the sentence that made the word meaningful in the first place. Lexiora holds both — the exact sentence where you found a word and the algorithm that decides when you're about to forget it.
The mechanics are straightforward. You install the Chrome extension (Edge and Brave are also supported), highlight a word while reading, and Lexiora pulls a definition plus synonyms and generates a memory image — think "morning mist disappearing before your coffee has time to cool" for *ephemeral*. A few days later, that card surfaces in a short review session. The spaced repetition interface gives you four options: Again, Hard, Good, or Easy, with intervals ranging from under a minute to +7 days. The algorithm picks words you're about to forget, not everything you've ever saved.
It's currently free during beta — unlimited lookups, unlimited saved words. A Pro tier is coming that'll include microstories (weekly short fiction built from your saved words), imagery per card, and the mobile app. Beta users get a discount when Pro ships. The product is early: no mobile app yet, no Kindle or Kobo support yet, and the roadmap is honest about that. But if you read a lot on the web — in a second language, in dense nonfiction like *The Economist*, or in literary fiction that stretches your native vocabulary — the core loop already works.
Key features
Context-preserving lookups
When you highlight a word, Lexiora saves the surrounding sentence alongside the definition, so your review card always shows you where you first met the word — not just what it means in isolation.
Spaced repetition review
The algorithm schedules each word at the moment the forgetting curve bends, surfacing cards at intervals of less than a minute, +1 day, +3 days, or +7 days depending on how well you know it.
AI-generated memory imagery
Each definition comes with a vivid sensory image designed to anchor the word — a feature currently available in the browser extension and listed as a Pro-tier card feature on the roadmap.
Multi-language support
The extension works on any source language, and you choose your native language for definitions, which makes it practical for readers working through novels or publications in a second language.
Pronunciation via YouGlish
Lexiora integrates YouGlish so you can hear a word pronounced in real-world context directly from the lookup card, not just a synthetic voice reading a phonetic string.
CSV export (Anki on roadmap)
You can export your saved words as a CSV today, and Anki export is explicitly on the roadmap for readers who want to fold their Lexiora words into an existing flashcard workflow.
Best for
- readers working through books or articles in a second language
- native English readers who want literary or high-register vocabulary to actually stick
- people who read heavily on the web via Chrome, Edge, or Brave
- early adopters willing to trade polish for a free beta with a discount lock-in
Skip if
- Kindle or Kobo readers — e-reader integration isn't available yet and is only listed as 'on the roadmap'
- anyone who needs a mobile app now — iOS and Android are coming but not shipped
- flashcard power users who need Anki export today, since that's also still on the roadmap
Pros & cons
Pros
- Completely free during beta with no lookup or save limits — genuinely generous for an early product
- Saves the original sentence with every word, which is the detail most vocabulary apps skip
- Spaced repetition intervals are shown explicitly (+1d, +3d, +7d), so you know exactly what the algorithm is doing
- Works across Chrome, Edge, and Brave without requiring a separate account per browser
- Early beta users get a discount on the Pro tier when it launches — a real incentive to get in now
Cons
- No mobile app yet — you can join a waitlist, but there's no ship date given
- No Kindle or Kobo support, which rules out the reading environment many serious readers actually use most
- Microstories and per-card imagery — two of the most compelling features — are gated behind a Pro tier that hasn't launched yet
- Documentation is thin; most details about the AI providers used and data handling only surface in the FAQ, not in any public docs
Pricing
| Tier | Price | Includes |
|---|---|---|
| Beta (current) | Free | Unlimited lookups, unlimited saved words, CSV export, spaced repetition review, Chrome/Edge/Brave extension |
| Pro (upcoming) | Not yet announced | Microstories, imagery per card, mobile app (iOS and Android); beta users get a discount at launch |
Frequently asked questions
What languages does Lexiora support?
The extension works on any source language — you're not limited to English content. You set your native language for definitions, and Lexiora adapts, which makes it usable for readers working in French, German, Spanish, or any other language.
How does the spaced repetition algorithm work?
It surfaces words at the point you're about to forget them, not on a fixed daily schedule. Review options give you 4 intervals — less than 1 minute (Again), +1 day (Hard), +3 days (Good), or +7 days (Easy) — and the algorithm adjusts based on your response.
Is my reading data private?
Lexiora sends only the highlighted text plus the surrounding sentence to its servers — it doesn't log page URLs. Third-party AI providers and dictionary APIs are used for generation, and YouGlish handles pronunciation, but your lookups are saved to your own account rather than retained as anonymous server logs.
How much does Lexiora cost?
Everything is free during the beta period — unlimited lookups and unlimited saved words. A Pro tier is coming that will include microstories, imagery per card, and the mobile app; beta users get a discount when it ships.
Can I use Lexiora on my Kindle?
Not yet — Kindle and Kobo support are on the roadmap but haven't launched. Right now the tool is limited to browser-based reading via Chrome, Edge, and Brave, which is a real gap compared to something like Readwise, which has had Kindle sync for years.
How Lexiora compares
Lexiora vs Anki
Anki gives you more control over spaced repetition decks and has a massive community of shared card sets, but it doesn't capture reading context automatically — you're building cards manually, which Lexiora eliminates entirely.
Lexiora vs Readwise
Readwise is better if you want to resurface highlights from Kindle, Pocket, and a dozen other sources, but it's not designed for vocabulary acquisition — there's no definition lookup, no spaced repetition tuned to forgetting curves, and no imagery.
Lexiora vs Duolingo
Duolingo works for structured language learning on a fixed curriculum, but it won't follow you into *Der Spiegel* or a novel you chose — Lexiora is built for the words you actually encounter in real reading, not a preset word list.
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