Glad you've got Thai. :-)
Love how I can easily make flashcards from things I'm reading online! Helps me review my reading.
Are you going to be able to increase the Thai support level? Move out of beta?
The missing parts that I would need to have Thai out of beta are:
1. Word detection – Readlang should know where each word starts and ends so that you don’t need to manually select each word yourself. This is easy when the languages use spaces, but with Thai, Chinese and Japanese, it’s tricky.
2. Word frequency lists – to be able to prioritize your learning to learn the most frequent/useful words first.
3. Text-to-speech audio – to hear the pronunciation of words
I can’t see these happening very soon, since I’m focussing on improvements that benefit all the languages at the moment. One day when Readlang is more successful and has more resources I hope to be able to improve Thai support.