Start with any of 22 topics: every page lists Turkish words with their English meanings and part of speech. No sign-up. Turkish, from first words to everyday talk. The rest of each pack is in the app.
Watch Your Language puts Turkish words like these in a widget on your iPhone Lock Screen and on your Apple Watch face. You see a handful of them every time you check the time, and the app schedules the repeats so the words you keep forgetting come back more often than the ones you already know.
You can add your own words too — from a photo, a page of notes or a spreadsheet.