Free Polyglot
Tools & Utilities.
100% free, local-first web utilities designed for serious language learners, flashcard creators, and spaced repetition researchers.
Online Cloze Deck Generator
Paste any article, dialogue, or grammar excerpt. Automatically turn targeted words into cloze deletion flashcards with Anki TSV and CSV export.
FSRS-5 vs SM-2 Workload Calculator
Input your target retention rate (80%β95%) and daily card count to compute exact review time savings and memory efficiency under FSRS-5.
CEFR Text Analyzer & Profiler
Scan paragraphs to determine CEFR proficiency tier distribution, unique lemma density, and extract optimal study sentences.
Spanish Subjunctive Trigger Tester
Interactive filter and tester for WEIRDO subjunctive clauses vs indicative certainty rules with authentic sentence breakdowns.
Anki Deck & TSV Exporter
Export 2,200+ authentic CEFR Spanish sentences, 25 grammar formulas, and dialogues into 1-click importable Anki decks with audio links.
Pick the right tool in 30 seconds
Most learners use one or two of these in a single session. Match your goal to the tool.
| If you want to⦠| Use this | How long |
|---|---|---|
| Turn text I'm reading into Anki cards | Cloze Generator | 2 min |
| Decide whether I can sustain my deck size | FSRS Calculator | 1 min |
| Check if a text is at my CEFR level | CEFR Analyzer | 2 min |
| Drill Spanish subjunctive triggers | Subjunctive Tester | 5 min |
| Move all my work into Anki | Anki Exporter | 3 min |
π These tools vs the Web App
The tools above are single-purpose utilities β paste text, run an analysis, export a deck. They do not save your progress.
For daily review with FSRS-5 scheduling, sentence history, and streak tracking, open the Web App 2.0.
π§ Tools vs the Grammar Hub
If you want deep-dive explanations of grammar concepts (subjunctive, conditionals, subjunctive triggers), the Grammar Hub is the better starting point.
For the science behind why this scheduling works, read the FSRS-5 algorithm explainer.
Common questions
Do these tools save my text or my cards?
No. All processing happens in your browser. Nothing you paste is uploaded to any server. The Anki Exporter saves the TSV file locally; you decide when and where to import it.
Which tool should I open first?
If you don't know your level yet, start with the CEFR Analyzer on a paragraph you just read comfortably. If you already know your level, jump straight to the Cloze Generator with a source text.
Are these tools really free?
Yes. The 5 tools above are free, ad-free, and never gated behind an account. The web app and arcade are free too; the optional paid tiers exist only inside the iOS app.