Blog
Notes on learning by ear.
Why we didn't build a streak counter
Streaks measure whether you opened an app, not whether you learned anything. Here's why DigDug tracks something else instead.
product philosophy
The vowel families hiding inside irregular verbs
English's 200 most common irregular verbs aren't random — most cluster into families that share a single vowel shift across base, past, and participle.
patternslinguistics
Why “go, went, gone” isn't a spelling problem
Irregular verbs are taught as a spelling exercise, but the actual difficulty is pronunciation — and that only gets fixed by hearing the words.
pronunciationteaching method