My tool supports Thai, if you'd like to try it - https://nuenki.app . I added it at the request of a user, who seems to be happy with it.
It's a browser extension that finds English sentences in webpages, and translates the ones at your difficulty level into the language you're learning.
That's a pretty sick idea. Unfortunately I presume it involves sending your browsing data (e.g. page contents) to the server?
Thank you, I will try it, although I'd prefer to translate entire sentences into Thai randomly. Perhaps you can add this advanced mode. Actually, I saw your app before while looking for an alternative to Toucan that supported Thai, but at that point in time you hadn't added support yet. Thanks for doing so.