Doesn't give fully correct transcriptions.
I tried: déanamh
it gave: dʲenaw...
I tried: rinneadh
it gave: rʲɪnʲæɣ
That pronunciation doesn't exist. It's simply a machine that converts one letter or set of letters into the same phonological symbol, regardless of context (stressed or unstressed vowel, place in the word...)...
And it's phonology, not phonetical IPA:
"buí" gives "bi:". In phonetics (ie. what is pronounced) it's [bwiː].
Without the glides, it's not that helpful for learners, because they wouldn't know broad b is pronounced bw before a long i...
So... it should be improved!
Abair.ie worked better although it had problems too sometimes
