Talkatoo will work with a wide range of accents by default, owing to it's incredibly rich and varied voice model. For further accuracy, we have the option to choose between Australian, Canadian, UK or US English as well. Note that this will not change the spelling of words that differ by region such as color vs colour etc.
If your accent is not listed here, not to worry, you can try out the different regions to see if any one works better for you, but the default will be just fine in most cases.
To change the setting, simply click the 3 dots on the side of Talkatoo, then click Settings: