Any apps to buy Taiwanese stocks?
Most of the large securities companies have trading by app. Go to Yuanta or Cathay Securities to open an account.
Are they all in English?
and is there any difference in idle account balance interest or trading commissions?
They’re both in Chinese.
To my knowledge you don’t get idle account interest in Taiwan. Commissions change more frequently than I open accounts and I tend to hold longer term, so honestly I am not sure who is the cheapest at the moment.