Upload a CSV, TSV, or plain text file — two columns, term then definition. Export from Google Sheets with File → Download → .csv, or from Excel/Numbers the same way. Rows merge into your deck just like pasting does.
Or paste words directly
Paste from Google Sheets (tabs carry over automatically), or just paste plain lines like 词 cí - definition — no reformatting needed either way. Importing only adds new words and updates ones that already match — it won't remove anything, so you can just paste new batches as you get them. To remove a card, use the × next to it in the list below.
Sync between devices
Download a full backup (cards + your review progress) and restore it on another copy of this app to keep devices in sync.