True retention
See passed review-stage answers, split between young and mature cards.
Anki Deck Analyzer
Get the truth about your reviews — retention, forecast, leeches — without your deck ever leaving your browser.
- No signup
- Free CSV export
- Runs locally
A clearer picture of your collection
Review pressure
Separate overdue cards from the next 60 days of existing reviews.
Cards to fix
Find leeches, repeated lapses, low ease, duplicates, overloaded prompts, and mega-clozes.
Your deck stays yours.
The package is read inside this browser tab. There is no upload endpoint, account, server copy, or third-party parser.
Questions
Is my deck uploaded anywhere?
No. Parsing happens in your browser; the page makes no network requests with your data.
Which files work?
.apkg deck exports and .colpkg collection exports, including the latest Anki format (zstd-compressed) and legacy formats.
Why don't I see retention or forecast?
Your export has no review history. In Anki, export with "Include scheduling information" checked (shared decks usually have it stripped).
Can I convert my deck to CSV?
Yes, free: all notes or just problem cards.
What is Smort?
An AI-graded spaced-repetition app for iPhone: answer in your own words by voice or text and let AI do the grading.