As of release 1.31, Kashdroid supports VAT in that you can specify different VAT rates on invoice items.
This requires VAT to be turned on within your Kashflow account.
Additionally, you can see a summary of VAT amounts on invoices.
Finally, in an unrelated area, we’ve tried to improve the linking between banking transaction items and the invoice/receipt they’re linked against. Unfortunately the Kashflow API restricts how well we can link, so it’s not perfect.