The Cantonese add-on of this app is problematic.
First, it mixes with the Mandarin expressions, which are not used in Cantonese at all. For example, the pronunciation of ‘tasty’ is given as [hou2 hek3] - but that is only pronouncing the Mandarin Chinese expression in Cantonese, instead of providing the Cantonese expression with its pronunciation as [hou2 sik6].
Second, the pronunciation in Jyutping may not be accurate. For example, ‘eat’ should be [sik6], instead of [si6]. The closing consonant [k] is one main feature present in Cantonese but not Mandarin Chinese.
I suggest the option of offering a cleaner version with only Cantonese to avoid all these confusion. Until that is done, I would like a refund.