Wordela Vocabulary Mastery is an app that can teach you a ton of new words in 10 minutes a day, and it’s on sale for $39.99 right now (reg. $324). The app covers rare words across a range of categories, from business vocabulary for adults, to K-12 lists for younger learners practicing for standardized tests.
Wordela spaces out word repetition to help new terms stick in your memory, and it comes with smart flashcards, audio pronunciations, and up to 60 usage examples for each word. A lifetime subscription gives you access for up to five users, so you could share with your kids or whoever else you want.
Wordela’s creators recommend practicing around ten minutes each day for the best retention, and a lifetime subscription is $39.99 right now (reg. $324), though prices can change at any time.