Lexicon

A flashcard app for building vocabulary fast. It merges 20+ popular word lists into one deck, scores every word for how much it is worth knowing, and shows you the arithmetic behind that score so you can disagree with it and change the weights. Swipe to grade a word and it decides when to show it to you again.

• ▸An importance score on every word, built from four signals, with the sum shown on the card rather than asserted
• ▸Those four weights are yours to move, and the deck reorders live as you move them
• ▸A four-way swipe to grade: know it, know it cold, remind me, no idea. Confident answers retire a word rather than stepping it along
• ▸Meaning, a mnemonic, related words, and a warning for the ones a letter apart, like ingenious and ingenuous
• ▸Set a target and a date and it works out how many words a day that takes, and says so when the answer is unrealistic
• ▸Works offline, installs to a phone home screen, and syncs between devices without an account

• ▸Open it and start swiping. Right if you know the word, up if you know it cold, left to see it again soon, down if you have no idea
• ▸Tap a card, or press space, to turn it over and read the rest
• ▸Filter the deck to one list or a difficulty band when you want to narrow what you are working through
• ▸To use it on your phone too, open settings and scan the pairing code

• ▸Open source under MIT. Fork it, or open a pull request
• ▸The word lists are compiled from published study material and are included for personal study use