This has everything I need from a dictionary app and quite a lot more. I’d definitely have been willing to pay for this app, but it’s available for free, with no ads, subscriptions, or upgrade fees.
TBH, it does occasionally freeze on my Mac. But it’s not designed for Mac, so I won’t deduct a star for that; it works flawlessly on my iPhone and iPad. And the problem on Mac is quickly fixed by closing and reopening the app.